• Installation Procedures

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    Installation Procedures

    This chapter describes how to install the system.

    Note:  Review the information in Safety precautions for handling replaceable units before handling replaceable parts.

    Before you begin

    Procedure
    1. Set up a product support account.
      If you do not already have a product support account, go to https://support.emc.com/products/39949 to set one up. You will need a support account to access the latest troubleshooting information, online chat, installation and maintenance videos, utilities and wizards.
    2. Complete the Configuration Worksheet.
      The Configuration Worksheet is available for download from https://support.emc.com/products/39949. Configuration worksheet information is also included in Configuration Worksheet.

    Installation workflow including optional DAEs

    Use the following documents and software and sequence of actions as a guide to install the storage system:

    1. Use the Quick Start Guide or this guide and the Unity Hardware Information Guide to:
      1. Prepare the site for installation.
      2. Unpack the storage system.
      3. Rack and install the storage system.
      4. Cable the system components.
      5. Power up the system components.
      6. Use the Connection Utility (CU) to discover and configure the system management IP address for network management.
      7. Launch a browser, log in to the system, and follow the Unisphere Initial Configuration Wizard tasks to complete the initial system configuration.
    2. Use Unisphere to:
      1. Complete the Initial Configuration Wizard tasks:
        • Accept License Agreement and Configure User Credentials
        • Install License File
        • Configure Network Services (DNS/NTP)
        • Configure FAST Cache and Pools (optional)
        • Configure Alerts (optional)
        • Configure Support Credentials, Customer Contact Information, and EMC Secure Remote Services (recommended)
        • Configure iSCSI Interfaces (optional)
        • Set up a NAS Server (optional)
      2. Enable SSH under Service > Service Tasks (recommended for remote support)
      3. Update system software under Settings > Software and Licenses (as required)
      4. Configure Block and File resources, and Hosts (as required)
    3. Use this guide and the Hardware Information Guide to:
      1. Rack and install optional DAEs
      2. Cable the optional DAEs
      3. Power up the optional DAEs
      4. Configure extra Block and File resources, and Hosts (as required)

    Site and equipment preparation

    The following items are required for installation.

    Tools: ESD protection kit, slotted or Phillips screwdriver (optional), and a mechanical lift (optional).

    Management console: A Windows-based computer to run the initialization, maintenance, and management tools with:

    • At least 100 MB of free space
    • Connection on same LAN subnet as your storage system (recommended)
    • Web browser (Internet Explorer, Mozilla Firefox, Google Chrome)
      Note:  Refer to the Unity Support Matrix on the support website for compatibility and interoperability information related to the Web browsers.

    Space: Cabinet vertical space of 2U (3.5 inches, 8.9 cm) for the disk processor enclosure (DPE), and if applicable, the following cabinet space for each DAE:

    • 2U, 25-drive DAE (3.4 inches, 8.63 cm)
    • 3U, 15-drive DAE (5.75 inches, 14.6 cm)

    Network connections: The following I/O modules and embedded modules are available for network connectivity.

    • 4-port 16Gb Fibre Channel I/O module
    • 4-port 25GbE Optical I/O module
    • 4-port 10GbE BaseT I/O module
    • 4-port 12Gb SAS backend I/O module
    • 10GbE BaseT 4-port card
    • 25GbE 4-port card

    Network information:

    • DNS and NTP servers accessible from the storage system (recommended)
    • Windows Domain Controller (recommended)
    • SMTP server network connection to the storage system and the management host (optional)
    • If you are using the Connection Utility, the management port and login information required includes:
      • A static IP address for the system
      • The subnet mask of the LAN to which the system is connected
      • The default gateway address of the LAN to which the system is connected
      • Passwords for system users admin and service
    • If you are setting up the system on a network with DHCP servers, DNS servers, and Dynamic DNS services, you need:
      • The system serial number
      • Domain information

    Unpack the DPE

    The disk processor enclosure (DPE) is a 2U component with 25 2.5" drive slots. Verify that you have received all of the DPE components, including cables, bezel, and rail kit.

    Component
    Image
    2U, 25-drive disk processor enclosure ( DPE)
    2U_25-drive_disk_processor_enclosure
    Tool-less rails
    Tool-less_rails
    Power cords
    Power_cords
    Bezel for disk processor enclosure (1)
    Bezel_for_DPE1

    Record the product serial number from the DPE

    The PSNT for the 25-slot DPE is a black pull-out tag that is located between the drives in slots 16 and 17.

    Figure 1. Location of the product serial number tag
    Location_of_PSN_tag

    Pull the tag out and record the product serial number from the tag on the Configuration Worksheet. The product serial number is three letters followed by 11 numbers. After recording the information, return the tag to its inserted position.

    Install the rails in the cabinet

    This task describes the procedure to install one rail. After installing one rail, repeat the procedure for the other rail. The procedure is the same for both the left and right rail. You can install the rails into either a square or round hole rack.

    Procedure
    1. Position the rail end piece so the label FRONT is located at the front of the rack and facing towards the inside of the rack, while orienting the rear of the rail to align level with the holes on the rear of the rack.
    2. From the rear of the rack, pull the rail straight back until the latch is locked.
    3. To install the front end piece of the rail, press the blue latch release button until the latch rotates open.
    4. Pull the rail forward until the pins slide into the holes on the front of the rack, then release the latch to secure the rail in place.
      Figure 2. Installing the rails
    5. Repeat for the other rail.

    Install the DPE on the rails

    CAUTION  

    The enclosure is heavy and should be installed into or removed from a rack by two people. To avoid personal injury and/or damage to the equipment, do not attempt to lift and install the enclosure into a rack without a mechanical lift and/or help from another person.

    L'enclosure étant lourde, sa mise en place dans l'armoire nécessite deux personnes. Afin de ne pas vous blesser et/ou endommager le matériel, n’essayez pas de soulever et d’installer l’armoire sur une rampe sans avoir recours à un relevage mécanique et/ou à l’aide d’une autre personne.

    Das Gehäuse ist schwer und sollte nur von zwei Personen in einem Rack installiert werden. Zur Vermeidung von körperlichen Verletzungen und/oder der Beschädigung des Gerätes, bitte das Gehäuse nicht ohne die Hilfe einer zweiten Person anheben und einbauen.

    Il contenitore è pesante e dev'essere installato nel rack da due persone. Per evitare danni personali e/o all’apparecchiatura, non tentare di sollevare ed installare in un rack il contenitore senza un sollevatore meccanico e/o l’aiuto di un’altra persona.

    Debido a su considerable peso, la instalación del compartimento en el bastidor deben realizarla siempre dos personas. Para evitar daños personales o en el equipo, el compartimento no debe levantarse ni instalarse en el bastidor sin la ayuda de un elevador mecánico o de otra persona.

    Procedure
    1. Lift the enclosure and slide it onto the rails from the front of the cabinet.
    2. Push the system into the rack until the slam latches engage and lock the system into the rack.
      Ensure that the enclosure is flush with the front of the rack, fully seated in the cabinet, and does not slide out.
      Figure 3. Installing the system in the enclosure

    Secure the system in the cabinet

    Procedure
    1. If securing the system for shipment in the cabinet or in other unstable environments, locate the hard mount captive screw under each latch and tighten using a #1 Phillips screwdriver.
      Figure 4. Securing the system in the cabinet

    Attach the storage processors to the network

    Procedure
    1. Locate two bulk Category (CAT) 5, 5e, 6, 6a or better Ethernet cables.
    2. Connect two Ethernet cables from the LAN to the 1 Gb RJ45 management ports from which you will configure the system. This will be one port on each storage processor.
      Note:  The SP A and SP B network management ports must be connected on the same subnet. In general, both SPs should have mirrored configurations in order to provide failover.
      Figure 5. Cabling the storage processors to the network
      Cabling_SPs_to_network
      Note:  Additional information about the ports and cabling is in the Hardware Information Guide, available on the Unity Info Hub at http://bit.ly/unityinfohub or on Online Support ( https://support.emc.com/products/39949).

    Install optional DAEs

    If you are installing one or more optional DAEs, see Unpack the (optional) disk-array enclosures for installation instructions.

    If you are not installing an optional DAE, continue to the next section.

    Connect power to the DPE

    Before you begin

    All components must be racked and the network cabling completed before connecting the storage system to power and booting the system.

    Procedure
    1. Verify that the cabinet circuit breakers are in the On position and that power is connected to the cabinet.
      Note:  No power cables should be connected to the PDUs at this time.
    2. Attach a double-sided Shut Down Procedure cable label to each power cable using the tie wraps included in the Accessory Kit.
      Note:  Attach each label close to the end of the power cable where it plugs into the DPE.
    3. Plug each DPE power cable into each SP assembly's power supply unit.
      The power cable to SP assembly A is gray. The power cable to SP assembly B is black.
    4. Secure each power cable to the system component with the cable retention bail on the power supply unit.
    5. Connect the DPE to the power distribution unit as follows:
      1. Connect the power supply for SP assembly A, shown in gray, to PDU A .
      2. Connect the power supply for SP assembly B, shown in black, to PDU B.
      Figure 6. Cabling the DPE to the PDU
      Cabling_to_PDU
    6. Bundle and secure the cables as necessary with tie wraps.
    7. If your storage system has been installed in a cabinet, place the single-sided adhesive backed Shut Down Procedure label included in the Accessory Kit on the back of the cabinet door. Otherwise, place this label in a location that is visible while viewing the storage system from the rear.
    8. Monitor the system as it powers up. It takes approximately 10-15 minutes for the system to power up. The LEDs show the progress of system activation. Green, blue, and amber activity lights blink during the startup sequence. Review the next section for information on the power up states.

    Power up optional DAEs

    If you installed one or more optional DAEs, attach the power cables. See Connecting power to the DAE for instructions on powering up a DAE.

    If you are not installing an optional DAE, continue to the next section.

    Verify status LEDs

    The system should be available in approximately 15 minutes.

    This section calls out only the LEDs that you need to verify to ensure that the system powered up correctly.

    Note:  The Unity Hardware Information Guide provides more details on all system LEDs.

    The array is powered up and ready to run the Connection Utility when the SP Fault LED shows intervals of amber for one second and blue for three seconds. If the system is on a network with a DNS server and DHCP, the management IP address can be assigned automatically. When it is assigned, the SP Fault LED is solid blue. Ensure that the power-up is complete and that the system is ready before you continue.

    DPE rear status LEDs
    Figure 7. Storage processor assembly LEDs
    Table 1. Storage processor assembly LEDs
    LED
    Location
    State
    Description
    Storage processor assembly fault
    Amber
    Fault has occurred.
    Blue
    A management IP address has been assigned.
    Amber or blue blinking
    System is booting.
    Blue and amber alternating (blue for 3 seconds)
    System not initialized. A management IP address has not been assigned.
    Blue and amber alternating at one second intervals
    Storage processor assembly in Service Mode.
    Off
    No fault has occurred, normal operation.
    Storage processor assembly power
    Green
    Storage processor assembly is on (main power).
    Green blinking
    Storage processor assembly is initializing a serial over LAN session (Standby Mode).
    Off
    Storage processor assembly is off.
    DPE front status LEDs
    Figure 8. DPE and disk drive LEDs
    Table 2. DPE and disk drive LEDs
    LED
    Location
    State
    Description
    Disk drive fault
    Amber
    Fault has occurred.
    Off
    No fault has occurred, normal operation.
    Disk drive active
    Blue
    Disk drive activity.
    Off
    Disk drive is powered off.
    DPE fault/power
    Blue
    Power is on. No fault has occurred, normal operation.
    Amber
    Power is on. Fault has occurred within the enclosure.
    Off
    Power is off.

    Installing the front bezel

    CAUTION  Remove the plastic protective strip from the front of the bezel prior to placing the system into operation. Failure to do so will cause the system to overheat.
    Procedure
    1. If present, remove the plastic protective strip from the front of the bezel.
    2. Align the bezel with the enclosure.
    3. Gently push the bezel into place on the cabinet until it latches.
    4. If the bezel has a lock, insert the key that shipped with your enclosure into the lock, and turn the key to lock the bezel.
      Figure 9. Installing the front bezel

    Connect a Windows-based computer to your storage system

    Note:  At the end of the power-up process, the SP Fault LED blinks in intervals of amber for one second and then blue for three seconds, indicating that the system is ready to run the Connection Utility.

    You must connect a Windows-based computer to your system directly or remotely over a subnetwork. This computer will be used to continue setting up your system and must be on the same subnet as the storage system to complete the initialization.

    NOTICE  Check to see if there is security software running on your workstation/laptop such as Cisco Security Agent or McAfee Host Intrusion Prevention Service that may prevent the initialized system from being detected. If there is, disable it (Windows Services) before running the initialization.

    The system management ports support both IPv4 and IPv6. You can assign an IP address to a system in the following ways:

    • If you are running the storage system on a dynamic network that includes a DHCP server and a DNS server, the management IP address can be assigned automatically.
    • If you are not running the storage system in a network that supports DHCP or you would rather manually assign a static IP address, you must install and run the Connection Utility on the Windows-based computer.

    Dynamic IP addresses (DHCP) should not be used for any components of the EMC Secure Remote Services Virtual Edition (ESRS VE) servers, Policy Manager servers, or managed devices.

    NOTICE   If you use DHCP to assign IP addresses to any EMC Secure Remote Services ( ESRS) components ( ESRS Virtual Edition servers, Policy Manager, or managed devices), they must have static IP addresses. Leases for the IP addresses that Dell EMC devices use cannot be set to expire. It is recommended that you assign static IP addresses to those devices you plan to have managed by ESRS.

    Automatically assigning a dynamic storage system management port IP address

    Assigning an IP address to a storage system management port dynamically requires the following:

    • Network DNS server (with dynamic DNS services enabled)
    • Network DHCPv4 server and/or a DHCPv6 server and/or a router advertising DNS servers
    • Connectivity between the storage system, the DHCP server, and the DNS server

    The DHCP server must be configured to automatically register DHCP clients with Dynamic DNS services. By default, storage systems are configured to use DHCP for IP assignment and will accept an IP address offered by a network DHCP server.

    Perform the following steps to automatically assign an IP address to your storage system management port:

    Procedure
    1. After you power up the storage system, check the SP Fault LED.
      • If the SP Fault LED is solid blue, a management IP address has been assigned.
      • If the SP Fault LED is solid blue for three seconds and then flashes amber for one second intervals, no management IP address has been assigned. Check the connectivity between the system, the DNS server, and the DHCP server.
    2. Open a web browser and access the Unisphere management interface specifying the following as a URL in the browser's address bar: serial_number.dns_zone
      where
      URL string
      Description
      serial_number
      Serial number of your storage system. You can find this in the packing materials that came with your system (for example, FNM00131800283). It is also on the PSNT tag on the front of the DPE.
      dns_zone
      Network DNS zone on which the storage system is located (for example, mylab.emc.com).

      Based on the examples provided in this table, the URL to the storage system would be FNM00131800283.mylab.emc.com.

      Note:  If a certificate error appears, follow the instructions in your browser either to bypass the error or to install the self-signed storage system certificate. For more detail about your storage system certificate, refer to the EMC Unity Security Configuration Guide.
    3. Log in with the default username and password.
      • Username: admin
      • Password: Password123#
      The Unisphere Initial Configuration wizard launches.
    4. Continue with the steps in the Unisphere Initial Configuration wizard to accept the license agreement, configure, and update the software on your system.
      The Unisphere Initial Configuration wizard online help provides information about the steps remaining to accept the license agreement, configure, and update the software on your system.
    5. Confirm that the SP Fault LED is now out.
      This provides an indication that all operating system software has booted and SP is ready for I/O.

    Manually assigning a static storage system management port IP address

    To manually assign a static IP address for the storage system management port, you must install and run the Connection Utility on a Windows-based computer. The Connection Utility assigns a network address to the storage system.

    Download and install the Connection Utility software

    Procedure
    1. Download the Connection Utility installation program from the Dell EMC Online Support website (), under the Downloads selection on the menu bar of the product page for your storage system.
    2. Install the Connection Utility software on a Windows computer.
      To use the Auto Discover method, install the Connection Utility on a computer in the same subnet as the storage system's management port.
    3. Launch the Connection Utility.
      In Windows: C:\Program Files\DELL EMC&#xnity\ConnectionUtility
      Note:  The Connection Utility automatically sets the displayed language based on the settings of the computer. To change the language displayed in the Connection Utility, select the language from the list under Change language:.

    Run the Connection Utility

    Before you begin

    Obtain the following information:

    • Serial Number: Unique identifier associated with the storage system (printed on a tag located on the system). This identifies your system when you use the Connection Utility to discover storage systems on a subnet. When you register your system online, this value is the Product ID.
    • System name: Name that you will be assigning to the storage system.
    • IP address: Management IPv4 or IPv6 address through which Unisphere connects to the storage system.
    • Subnet mask: For IPv4 management addresses, the subnet mask is an IP address mask that identifies the range of IP addresses in the subnet where the storage system is connected.
    • Subnet prefix length: For IPv6 management addresses, the subnet prefix length is the number of significant bits in the address that will be used for routing purposes.
    • Gateway address: IP address of the default gateway for the management interface. The gateway is the IP address of the router or node used to communicate outside the local subnet.

    Run the Connection Utility from a host attached to the same subnet as your storage system. Doing so lets the Connection Utility automatically detect the new storage system. If you are unable to run the Connection Utility from the same subnet, you can still manually configure the connection.

    Procedure
    1. On the Welcome screen, select one of the following methods to configure your system, and then click Next:
      • Auto Discover - Use this method if you are running the Connection Utility from a host on the same subnet as your storage system. This method automatically discovers unconfigured storage systems on your local network and sends the configuration file directly to the storage system.
      • Manual Configuration - Use this method if you are running the Connection Utility from a host that is not on the same subnet as your storage system. This method enables you to create a configuration file that you can save to a USB flash drive. You then insert the flash drive into the USB port on the storage system, and the storage system automatically reads the configuration from the USB drive.
    2. [Applies to Auto Discover mode only] From the list of automatically discovered systems, select the system you want to configure, and then click Next. Note: If you do not see the system listed on the screen, try clicking Discover to restart the discovery process. If the problem persists, refer to troubleshooting instructions.
    3. On the Configure screen, specify the following:
      • Name - A meaningful name for this system. You can specify a name up to 32 characters. It can only contain alpha-numeric characters and a dash. It cannot contain any space characters, underscores, or begin and end with a dash.
      • In the Management IPv4 Address and Management IPv6 Address sections, select the options you want, specify relevant information, and then click Next.
    4. Review the configuration information, and then do the following based on the mode you selected:
      • For Auto Discover mode, click Start to apply the configuration on the storage system.
      • For Manual Configuration mode:
        1. Click Save to USB drive. Ensure that you save the configuration file to the root directory level of the USB drive.
        2. Click Next to identify the location of the port on your storage system.
        3. Insert the USB drive into one of the available USB ports on either SP.

        The storage system will automatically detect the USB drive and apply the network connection information. This process may take up to 10 minutes. When successfully completed, a response file (iw_resp.txt) is written back to the USB drive.

    5. Click Finish.
    6. Confirm that the SP Fault LED is solid blue, which indicates that the system's IP address has been set.
    After you finish

    In a web browser, access Unisphere by specifying the URL: http://<ip_address>/.

    Where, <ip_address> is the IP address you set for the storage system.

    Note:  Refer to the Configuration Worksheet for information on the user credentials you must use the first time you log on.

    The Initial Configuration Wizard launches the first time you access Unisphere. Refer to the Configuration Worksheet and Unisphere Online Help for more information on configuring and start using your system.

    Unpack the (optional) disk-array enclosures

    Disk-array enclosures (DAEs) provide additional storage. The types of DAEs available are:

    • 3U 15 disk 3.5" drive DAE
    • 2U 25 disk 2.5" drive DAE

    DAEs are optional. If you have one or more DAEs in the system, verify that you have received all of the DAE components, including cables, bezel, rail kit, and mounting screws.

    Verifying shipping package contents

    Confirm that you received all necessary equipment needed to install the new 15-drive DAE.

    Verify that you received the following:
    Component
    Quantity
    Disk-array enclosure (DAE)
    Front view
    Disk-array enclosure front view
    Rear view Disk-array enclosure rear view
    1
    Snap in rail kit
    Snap in rails
    Snap in rail screws
    1 (includes 2 rails and 6 screws)
    Power cords (AC or DC)
    AC power cords
    Power cords
    DC power cords
    2
    Bezel for disk-array enclosure (with key)
    Bezel for disk-array enclosure
    1
    SAS cables (either 1 meter or 2 meter copper) that connect disk-array enclosures to each other (1 meter cables) or to DPE (2 meter cables)
    SAS cables that connect disk-array enclosures to each other or to DPE
    2

    Verifying shipping package contents

    Confirm that you received all necessary equipment needed to install the new 25-drive DAE.

    Verify that you received the following:

    Component
    Quantity
    Disk-array enclosure (25-drive DAE)
    Front view
    25-drive DAE front
    Rear view
    25-drive DAE rear
    1
    Rail kit, including
    • Snap-in rails (2)
    • Screws (3 per rail)
    securing screws DAE rails
    1
    Power cords

    power cords
    2
    Bezel for disk-array enclosure (with key)
    bezel
    1
    mini-SAS HD cables (either 1 meter or 2 meter copper) that connect disk-array enclosures to each other (1 meter cables) or to DPE (2 meter cables)
    Mini-SAS HD cables that connect DAEs to each other or to DPE
    2

    Install the disk array enclosure

    There are two types of DAEs. One is a 3U 15 disk 3.5" drive DAE. The other is a 2U 25 disk 2.5" drive DAE. DAEs are optional. The installation procedures are slightly different for each.

    Installing snap-in rails in the cabinet

    Note:   The snap-in rails are dedicated left and right, and cannot be interchanged. The front edge of each rail is stamped L or R for left or right side when the rail faces the cabinet front.

    The snap-in rails have two key tabs at the top and bottom edge on the rear of each rail. The key tabs ensure that the rails are installed in the appropriate 2U space.

    Procedure
    1. From the rear of the cabinet, insert the two key tabs into the holes of the 2U-space on the rear cabinet channel.
      Figure 10. Key tabs at rear rail top and bottom edge
      Note:  As the key tabs and adaptors are pushed into the rear mounting holes, the spring clips will ride over the cabinet channel and snap into place.
    2. Holding the rail extended, push the key tabs and the adaptors into the rear mounting holes until the spring clips snap into place on the outside of the rear cabinet channel.
      Figure 11. Aligning the rear adaptors (left rear of cabinet shown)
    3. At the front of the cabinet, making sure the rail is level, pull it forward and align the rail adaptor with the mounting hole in the channel. Push in on the spring clip while pulling forward on the rail. When the spring clip is forward of the front cabinet channel, and the adaptor is in the mounting holes, release the spring clip so it holds the rail in place.
      CAUTION  Ensure the spring clip is securely attached to the channel. It may be necessary to push in on the clip to assist in snapping it into place.
      Figure 12. Securing the Spring Clips
    4. From the rear of the cabinet, secure the rail in place using one M5 screw on each rail.
      Figure 13. Installing the M5 Screw

    Installing the DAE on the rails

    WARNING  

    The enclosure is heavy and should be installed into or removed from a rack by two people. To avoid personal injury and/or damage to the equipment, do not attempt to lift and install the enclosure into a rack without a mechanical lift and/or help from another person.

    Procedure
    1. With help from another person, lift the enclosure and, from the front of the cabinet/rack, slide the enclosure onto the rails.
      Figure 14. Sliding the enclosure onto the rails
    2. Once the enclosure is completely seated into the rear tabs, secure the front of the enclosure to the front vertical channels with four screws (two per side), but do not tighten the screws until they are all in place.
      Figure 15. Securing the front of the enclosure

    Installing the rails in the cabinet

    Note:   The snap-in rails are dedicated left and right, and cannot be interchanged.
    Procedure
    1. Orient the rails. Face the front of the cabinet when orienting the left and right rail placement. The front edge of each rail is stamped L or R.
    2. From the rear of the cabinet, insert the adapters into the holes on the rear rack channel with the rail extended as shown in Figure 16.
    3. Push the rail into the rear mounting holes until the spring clips snap into place on the outside of the rear channel.
      CAUTION  Ensure the holes on the rail line up with the holes on the cabinet. This will ensure proper alignment of the rails. Also, check that the rails are level and using the same cabinet Unit markers from front to rear. Ensure you are using the same unit markers from the front of the cabinet to the rear of the cabinet.
      Figure 16. Push rail into rear channel mounting holes
    4. From the rear of the cabinet, secure the rails in place using one M5 screw on each rail.
      Figure 17. Installing the M5 Screw
    5. Working from the front of the cabinet, align the adaptor with the mounting hole on the front of the rack as shown in Figure 18.
      CAUTION  Ensure the holes on the rail line up with the holes on the cabinet. This will ensure proper alignment of the rails. Also, check that the rails are level from front-to-back and left-to-right. Ensure you are using the same unit markers from the front of the cabinet to the rear of the cabinet.
    6. Push in on the spring clip while pulling the rail forward. When the spring clip is forward of the front rack channel, and the adaptor is in the mounting holes, release the spring clip so it holds the rail in place.
      CAUTION  Ensure the spring clip is securely attached to the channel. It may be necessary to push in on the clip to assist in snapping it into place.
      Figure 18. Securing rail to front channel

    Installing the DAE on the rails

    CAUTION  

    The enclosure is heavy and should be installed into or removed from a rack by two people. To avoid personal injury and/or damage to the equipment, do not attempt to lift and install the enclosure into a rack without a mechanical lift and/or help from another person.

    L'enclosure étant lourde, sa mise en place dans l'armoire nécessite deux personnes. Afin de ne pas vous blesser et/ou endommager le matériel, n’essayez pas de soulever et d’installer l’armoire sur une rampe sans avoir recours à un relevage mécanique et/ou à l’aide d’une autre personne.

    Das Gehäuse ist schwer und sollte nur von zwei Personen in einem Rack installiert werden. Zur Vermeidung von körperlichen Verletzungen und/oder der Beschädigung des Gerätes, bitte das Gehäuse nicht ohne die Hilfe einer zweiten Person anheben und einbauen.

    Il contenitore è pesante e dev'essere installato nel rack da due persone. Per evitare danni personali e/o all’apparecchiatura, non tentare di sollevare ed installare in un rack il contenitore senza un sollevatore meccanico e/o l’aiuto di un’altra persona.

    Debido a su considerable peso, la instalación del compartimento en el bastidor deben realizarla siempre dos personas. Para evitar daños personales o en el equipo, el compartimento no debe levantarse ni instalarse en el bastidor sin la ayuda de un elevador mecánico o de otra persona.

    CAUTION   Do not install the enclosure without the rear rail screws installed and fully tightened. If the screws are not installed and tightened, the rails could rotate out of position, possibly causing the enclosure to fall, causing damage to the DAE and causing personnel injury.
    Procedure
    1. With help from another person, lift the enclosure and, from the front of the cabinet/rack, slide the enclosure onto the rails.
      Figure 19. Sliding the enclosure onto the rails
      When the enclosure slides to the back of the cabinet, the rear tabs on the rails insert into the notches in the rear of the enclosure. The tabs secure and support the rear of the enclosure.
      Figure 20. Rail tabs securing the rear of the enclosure
    2. Secure the front of the enclosure to the front vertical channels with four screws (two per side), but do not tighten the screws until they are all in place.
      Figure 21. Securing the front of the enclosure

    Cabling the DPE to a DAE

    If you have one or more DAEs, cable the DAEs to the DPE back-end ports so that the storage is available in the system.

    Ensure that the DAE is located close enough to route and connect to the DPE using the two-meter DPE-to-DAE interconnect cables. Five-meter and ten-meter interconnect cables are available when connecting enclosures across multiple racks.

    Note:  General DAE back-end bus configuration rules:
    1. Maximum number of enclosures per bus is 10.
    2. Maximum number of drive slots per bus is 250, up to specific system limitations for drive slots.
    3. For best performance, it is recommended that you evenly distribute DAEs across the available back-end buses.
    Consider the maximum number of drives that can be installed in the storage system model. DAEs can be added to the system while the operating system is active, and up to the DAE and drive slot limit for the storage system. DAEs or drive slots that are over the system limit cannot operate in the system.

    The storage processors connect to the DAEs with mini-SAS HD cables. The cables connect LCCs in the DAEs of a storage platform in a daisy-chain topology. The mini-SAS HD ports on the storage processors in the DPE are labeled 0 and 1. Mini-SAS HD port 0 is connected internally to the SAS expander that connects the drives on the front of the DPE.

    Each DAE supports two redundant connections to the DPE: LCC A and LCC B.

    It is recommended that you connect the first optional DAE to the mini-SAS HD output port 1 of each storage processor. This connection creates back-end bus 1 (BE1) and designates this DAE as enclosure 0 of this bus. The address of this enclosure is BE1 Enclosure 0. In a two back-end bus system, it is recommended that you connect the second optional DAE to the mini-SAS HD port 0 of each storage processor.

    DAE load balancing

    If your system has several optional DAEs, you can daisy-chain them within that bus. However, it is recommended that you balance each bus. In other words, optimize your environment by using every available bus, and spread the number of enclosures and drives as evenly as possible across the buses. The rule of load or bus balancing is applied to all DAEs.

    Cabling the first optional DAE to create back-end bus 1

    Connect the first optional expansion DAE to port 1 of the DPE to create back-end bus 1 (BE1) and designate this DAE as enclosure 0 of this bus. We refer to the address of this enclosure as BE1 Enclosure 0 (1_0).

    To prepare for this cabling task:

    • Locate the mini-SAS HD cables to be used to connect to the newly installed expansion DAE. Typically these cables are two-meters long. You use longer cables, typically five-meters or eight-meters, to connect enclosures located in different racks. Cables are shipped without labels attached. The cables and ports are not colored.
    • Locate the sheet of cable labels provided.

    Orient the cable connectors as described in the procedure that follows, making sure that you do NOT connect:

    • A DPE expansion port 0 to another DPE expansion port 0
    • Any A-side ports to B-side ports
    Procedure
    1. Label a pair of mini-SAS HD cables.
    2. Connect port 1 on SP A in the bottom slot of the DPE to port A on the link control card (LCC A) in the bottom of the DAE.
    3. Connect port 1 on SP B in the top slot of the DPE to port A on the link control card (LCC B) in the top of the DAE.
    Example 
    Figure 22. Cabling one DPE to one 25-drive DAE
    Cabling_one_DPE_to_one_25-drive_DAE

    Cabling the second optional DAE to create back-end bus 0

    Connect the second optional expansion DAE to the DPE expansion port 0 to extend back-end bus 0 (BE0) and designate this DAE as enclosure 0 of this bus. We refer to the address of this enclosure as BE0 Enclosure 0 (0_0).

    Note:  When cabling the 15-drive DAE LCC SAS ports, ensure that the cables do not overlap behind the DAE.
    Procedure
    1. Label a pair of mini-SAS HD cables.
    2. Connect port 0 on SP A in the bottom slot of the DPE to port A on the link control card (LCC A) in the bottom of the DAE.
    3. Connect port 0 on SP B in the top slot of the DPE to port A on the link control card (LCC B) in the top of the DAE.
    Example 
    Figure 23. Cabling a DPE to a second 25-drive DAE
    Cabling_DPE_to_2nd_25-drive_DAE
    After you finish

    If you need to cable more than two optional DAEs, refer to the Unity Installation Guide.

    Cabling an expansion DAE to an existing DAE to extend a back-end bus

    Connect the optional expansion DAE to the last installed DAE in the back-end bus to extend to the new DAE.

    Note:  When cabling the 15-drive DAE LCC SAS ports, ensure that the cables do not overlap behind the DAE.
    Procedure
    1. Label a pair of mini-SAS HD cables.
    2. Connect port B on the link control card (LCC A) of the lower-numbered DAE to port A on the link control card (LCC A) of the higher-numbered DAE.
      LCC A is on the lower portion of the DAE.
    3. Connect port B on the link control card (LCC B) of the lower-numbered DAE to port A on the link control card (LCC B) of the higher-numbered DAE.
      LCC B is on the upper portion of the DAE.
    Example Connect the DAE to another DAE
    Figure 24. 25-drive DAE extended to a 15-drive DAE
    25-drive_DAE_extended_to_15-drive_DAE

    Connecting power to the DAE

    Procedure
    1. Verify that the cabinet circuit breakers are in the On position and that power is connected to the cabinet.
    2. Connect the power cables to the optional DAEs.
      Figure 25. Connecting power cables to the 3U, 15-drive DAE
      Connecting the power cable to the 3U, 15-drive DAE
      Figure 26. Connecting power cables to the 2U, 25-drive DAE
      Connecting_power_cables_to_2U_15-drive_DAE
    3. Secure each power cable to the power supply with the cable retention bail.
    4. Connect the power to the each DAE as follows:
      1. Connect the power cable for LCC A to PDU A.
      2. Connect the power cable for LCC B to PDU B.
      The enclosures power up immediately once the cable is connected.
    5. Bundle and secure the cables as necessary with tie wraps.