• Hardware component descriptions

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    Hardware component descriptions

    Disk processor enclosure

    Two types of disk drive DPEs are supported:

    • either 3.5-inch disk drives (hot-swappable)
    • either 2.5-inch disk drives (hot-swappable)
    Note:  Disk drives used in the 2U, 12 disk drive DPE cannot be interchanged with the disk drives from a 2U, 25 disk drive DPE.
    NOTICE  When calculating the number of drives supported, the DPE is included in the total drive slot quantity.

    Each model supports a different number of drive slots and DAEs.

    • Unity 300F/350F and Unity 300 - 150 drive slots
    • Unity 400F/450F and Unity 400 - 250 drive slots
    • Unity 500F/550F and Unity 500 - 500 drive slots
    • Unity 600F/650F and Unity 600 - 1000 drive slots

    The number of DAEs supported by the Unity™ All Flash and Unity Hybrid is variable depending on the drive type in the DPE and DAEs. A Unity All Flash and Unity Hybrid system cannot be configured with more drive slots than supported and will fault the DAE that contains the slots above the system limits.

    Unless the array is restricted by its slot count, each back-end loop could contain:
    • Ten 3U, 15-drive DAEs (150 slots)
    • Ten 2U, 25-drive DAEs (250 slots)
    • Three 3U, 80-drive DAEs (240 slots)

    General disk processor enclosure information

    Drive carrier

    The DPE (disk processor enclosure) comprises the following components:

    • Drive carrier
    • Disk drives
    • Midplane
    • Storage processor (SP) CPU
    • SP power supply module
    • EMI shielding

    The disk drive carriers are metal and plastic assemblies that provide smooth, reliable contact with the enclosure slot guides and midplane connectors. Each carrier has a handle with a latch and spring clips. The latch holds the disk drive in place to ensure proper connection with the midplane. Disk drive activity/fault LEDs are located on the front of the enclosure.

    Each disk drive consists of one disk drive in a carrier. You can visually distinguish between disk drive types by their different latch and handle mechanisms and by type, capacity, and speed labels on each disk drive. You can add or remove a disk drive while the DPE is powered up, but you should exercise special care when removing modules while they are in use. Disk drives are extremely sensitive electronic components.

    A midplane separates the front-facing disk drives from the rear-facing SPs. It distributes power and signals to all components in the enclosure. SPs and disk drives plug directly into the midplane.

    The SP assembly is the intelligent component of the DPE. Acting as the control center, each SP assembly includes status LEDs.

    Each SP contains a power supply module that connect the system to an exterior power source. Each power supply includes LEDs to indicate component status. A latch on the module locks it into place to ensure proper connection.

    EMI compliance requires a properly installed electromagnetic interference (EMI) shield in front of the DPE disk drives. When installed in cabinets that include a front door, the DPE includes a simple EMI shield. Other installations require a front bezel that has a locking latch and integrated EMI shield. You must remove the bezel/shield to remove and install the disk drives.

    2U, 12 (3.5-inch) disk drive DPE

    The following illustration shows the location of the disk drives and the status LEDs in a 2U, 12 (3.5-inch) disk drive DPE.

    Figure 1. Example of the 2U, 12 (3.5-inch) disk drive DPE (front view)
    12-drive 2U DPE front view with numbered callouts
    Table 1. 2U, 12 (3.5-inch) disk drive DPE descriptions
    Location
    Description
    Location
    Description
    1
    3.5-inch SAS disk drive
    3
    DPE power on LED (blue)
    2
    DPE fault LED (amber)
    4
    Disk drive ready/activity and fault LED (blue and amber)

    The following table describes the 2U, 12 (3.5-inch) disk drive DPE and the disk drive status LEDs.

    Table 2. 2U, 12 (3.5-inch) DPE and disk drive LEDs
    LED
    Location
    Color
    State
    Description
    DPE fault
    2
    Amber
    On
    DPE fault, including SP faults.
    Off
    Normal
    DPE power
    3
    Blue
    On
    Powering and powered up
    Off
    Powered down
    Disk drive ready/activity and fault
    Note:  The disk drive LED (a left or right triangle symbol) points to the disk drive that it refers to.
    4
    Blue
    On
    Powering and powered up
    Blinking, mostly on
    Disk drive is on with I/O activity
    Blinking at constant rate
    Disk drive is spinning up or down normally
    Blinking, mostly off
    Disk drive is powered up but not spinning
    Note:  This is a normal part of the spin-up sequence, occurring during the spin-up delay of a slot.
    Amber
    On
    Fault has occurred
    Off
    Disk drive is powered down

    Product Serial Number Tag

    The Product Serial Number Tag (PSNT) is a serialized label allowing EMC service to track nested hardware material in the field.

    The PSNT for the 12-slot DPE is a pull-out tag that is located in the upper right side of the enclosure.

    Figure 2. PSNT location

    2U, 25 (2.5-inch) disk drive DPE

    The following illustration shows the location of the disk drives and the status LEDs in a 2U, 25 (2.5-inch) disk drive DPE.

    Figure 3. Example of the 2U, 25 (2.5-inch) disk drive DPE (front view)
    25-drive 2U DPE front view with numbered callouts
    Table 3. 2U, 25 (2.5-inch) disk drive DPE details
    Location
    Description
    Location
    Description
    1
    2.5-inch SAS disk drive
    4
    Disk drive fault LED (amber)
    2
    DPE fault LED (amber)
    5
    Disk drive ready/activity LED (blue)
    3
    DPE power status LED (blue)

    The following table describes the 2U, 25 (2.5-inch) disk drive DPE and the disk drive status LEDs.

    Table 4. 2U, 25 (2.5-inch) DPE and disk drive LEDs
    LED
    Location
    Color
    State
    Description
    DPE fault
    2
    Off
    No fault has occurred, normal operation
    Amber
    On
    Fault has occurred
    DPE power
    3
    Blue
    On
    Powering and powered up
    Off
    Powered down
    Disk drive fault
    4
    Amber
    On
    Fault has occurred
    Off
    No fault has occurred
    Disk drive on/activity
    5
    Blue
    On
    Powering and powered up
    Blinking
    Disk drive activity

    Product Serial Number Tag

    The Product Serial Number Tag (PSNT) is a serialized label allowing EMC service to track nested hardware material in the field.

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

    Figure 4. PSNT location

    2U DPE rear view

    On the rear of the 2U DPE, viewing from top to bottom, each logical SP (B and A), consists of:

    • One power supply module
    • One storage processor
    • up to two Ultraflex I/O modules

    The following illustration shows the location of the replaceable components at the back of the DPE.

    Figure 5. DPE rear view with component locations
    DPE rear view with component locations
    Table 5. DPE rear view descriptions
    Location
    Description
    Location
    Description
    1
    Power supply module (SP B)
    3
    Ultraflex I/O module slots (SP B), filler modules shown
    2
    Storage processor assembly (SP B)
    4
    SP A

    Storage processor rear view

    On the rear of the storage processor, viewing from left to right, are:

    • Two RJ-45 LAN connectors (labeled with a network management symbol and a wrench symbol) management ports
    • SP status LEDs
    • One mini-HDMI port and one USB 3.0 port
    • Reset button (NMI)
    • Two 10-GbE ports
    • Two 12-Gb/s mini-SAS HD ports
    • Two integrated Converged Network Adapter (CNA) ports

    The following illustration shows the location of the SP components:

    Figure 6. Example storage processor rear view
    Example storage processor rear view
    Table 6. Storage processor rear view descriptions
    Location
    Description
    Location
    Description
    1
    Management LAN (RJ-45) port
    8
    SP unsafe to remove LED (black with white hand)
    2
    Grounding screw (required for DC-powered systems)
    9
    SP fault LED
    3
    Torque knob for SP removal
    10
    SP power LED
    4
    Two converged network adapter (CNA) ports (labeled 4 and 5)
    11
    Non-maskable interrupt (NMI) push button (password reset button) a
    5
    Two 12 Gb/s mini-SAS HD ports (labeled 0 and 1)
    12
    SP memory or boot fault LED
    6
    Two 10 GbE ports (labeled 2 and 3)
    13
    Mini-HDMI port (not used)
    7
    USB 3.0 port
    14
    Service LAN (RJ-45) port
    a. NMI = non-maskable interrupt, push button used for password reset and forcing a system dump. Hold for 2 seconds to reset the password. Hold for 10 seconds or more forces a reboot.

    The following table describes the SP status LEDs.

    Table 7. Storage processor LED details
    LED
    Location
    Color
    State
    Description
    SP power LED
    10
    Green
    On
    The SP is on main power.
    Blinking (1Hz)
    The SP is initializing a serial over LAN (SOL) session (standby mode).
    Off
    The SP is off.
    Unsafe to Remove LED
    8
    White
    On
    DO NOT remove the SP.
    Note:  Improper removal of the SP when this LED is lit could cause data loss during critical situations.
    Off
    Safe to remove the SP without the risk of data loss when the SP has been properly prepared.
    SP fault LED
    9
    Amber
    Blinking once every four seconds (.25 Hz)
    BIOS is running.
    Blinking once every second (1 Hz)
    POST is running.
    Blinking four times every second (4 Hz)
    POST completed and OS boot has started.
    On
    An SP fault detected.
    Blue
    Blinking once every four seconds (.25 Hz)
    Operating system is booting.
    Blinking once every second (1 Hz)
    Operating system driver is starting.
    Blinking four times every second (4 Hz)
    Operating system caching driver is starting.
    On
    • SP is in degraded mode.
    • System not initialized. A management IP address is assigned.
      Note:  Once license accepted, the SP fault LED turns off.
    Off
    All operating system software has booted and SP is ready for I/O.
    Amber and blue
    Alternating at one second intervals
    SP is in Service mode.
    Amber then immediately blue every three seconds
    System not initialized and no management IP address assigned.
    SP memory or boot fault LED
    12
    Amber
    On
    The SP cannot boot due to a memory or boot fault.
    Off
    Normal Operation.

    About converged network adapter (CNA) ports

    Each SP contains two integrated CNA ports (labeled 4 and 5). These ports are PCI Express 3.0 x4 adapters that provide interfaces that can be configured as Ethernet, or Fibre Channel, but once set to a protocol, cannot be changed. If CNA ports are set to Ethernet, then you can use either 1Gb/s, 10Gb/s SFPs or Twin-AX for File (IP) or iSCSI Block access. If the ports are set to Fibre Channel, then you can use SFPs supporting 4, 8, 16 Gb/s FC multi-mode, or single-mode SFPs supporting 16Gb/s only.

    NOTICE  Once you set the network protocol on the CNA ports you cannot switch to a different network protocol. Additionally, the four CNA ports cannot be configured independently; they must all be configured with the same network protocol. For example, if you configure the CNA ports for 10Gb/s Ethernet you cannot then later switch these ports to Fibre Channel.
    Table 8. CNA configurations
    Speed
    Protocol
    Connection
    1 Gb/s
    iSCSI and IP/file
    BASE-T RJ45 Ethernet
    10 Gb/s
    iSCSI and IP/file
    SFP+ or Active/Passive TwinAx
    4/8/16 Gb/s
    Fibre Channel 1
    SFP+ or OM2/OM3
    4/8 Gb/s
    Fibre Channel
    SFP+ or OM2/OM3
    16 Gb/s
    Fibre Channel (Single Mode 2)
    SFP+ or OS1/OS2
    1 - You may experience performance issues when directly attaching 16Gb/s FC ports to some 16Gb/s HBAs. See the Unity Family Release Notes for more details.
    2 - If there is a synchronous replication port, it can be configured as single mode and the remaining ports can be configured as multi mode.
    Figure 7. CNA port locations
    CNA port locations
    CNA port activity LED

    The CNA activity port LED — a bi-color blue/green LED between the two CNA ports each connector — indicates the link/activity of the port. The port activity LED color depends on the protocol configured on the CNA.

    • Fibre Channel CNA ports use a blue LED
    • Ethernet CNA ports use a green LED

    The following table describes the link/activity and connection speed associated with the CNA port LEDs.

    Table 9. CNA port LEDs
    LED
    Color
    State
    Description
    Link/Activity
    Green
    On
    Ethernet link active
    Blinking (1 Hz)
    Ethernet port fault
    Blue
    On
    Fibre Channel link active
    Blinking (1 Hz)
    Fibre Channel port fault
    Off
    Link inactive (Ethernet or FC)

    SP I/O module types

    Many I/O module types are supported by the storage processor.

    NOTICE  When adding new I/O modules, always install I/O modules in pairs—one module in SP A and one module in SP B. Both SPs must have the same type of I/O modules in the same slots.

    Refer to Platform Overview for a details on the supported types and the system limits of storage processor I/O modules.

    • Four-port 12-Gb/s SAS I/O module -- where supported, provides four mini-HD SAS ports (x16 lane) of 12Gb SAS expansion for connecting additional DAEs. This I/O module also supports controller based encryption. Labeled 12Gb SAS v1.
    • Four-port 16-Gb/s Fibre Channel I/O module -- provides Fibre Channel connectivity as listed below. Labeled 16Gb Fibre v3.
      • Four ports auto-negotiating to 4/8/16Gbps. Uses optical SFP+ and OM2/OM3 cabling to connect directly to a host HBA or FC switch.
      • One FC port negotiating to 16Gbps, which can be configured for synchronous replication between two Unity systems, either directly connected or connected through a switch. Uses optical SFP+ and SM or MM cabling to provide synchronous replication. The three remaining ports auto-negotiate to 4/8/16 Gbps, and use optical SFP+ and OM2/OM3 cabling to connect directly to a HBA or FC switch.
    • Four-port 10-Gb/s optical I/O module -- provides four SFP+ optical or Active/Passive TwinAx 10GbE IP/iSCSI ports for connections to an Ethernet switch. Supports both IP(file) and iSCSI (Block) on the same I/O module. Ports can be configured as both IP and iSCSI simultaneously. Labeled 10 GbE v5.
    • Four-port 10GBASE-T I/O module -- provides four copper 10GBASE-T RJ45 Ethernet ports for copper connections to an Ethernet switch. Supports both IP (file) and iSCSI (Block) on the same IO module. Ports can be configured as both IP and iSCSI simultaneously. Labeled 10GbE BaseT v2.
    • Four-port 1GBASE-T I/O module -- provides four 1000BASE-T RJ-45 copper ports for Cat 5/6-cabling connections to an Ethernet switch. Supports both IP (file) and iSCSI (Block) on the same I/O module. Ports can be configured as both IP and iSCSI simultaneously. Labeled 1 GbE BaseT v3.
    • Two-port 10Gb/s optical I/O module -- provides two SFP+ optical or Active/Passive TwinAx 10GbE ports for connections to an Ethernet switch. Supports both IP (file) and full iSCSI Offload engine (Block) on the same IO module. Ports can be configured as both IP and iSCSI simultaneously. Labeled 10 GbE V6.

    Detailed introduction to supported I/O modules

    Overview of the supported optional I/O modules available for use in your system.

    Review these sections to learn about the uses, features, ports, and LEDs for the supported optional I/O modules.

    Four-port 12-Gb/s SAS

    Where supported, the four-port (x16 lane) 12-Gb/s SAS I/O module comes with four x4 lane mini-SAS HD (High Density) ports, one power/fault LED, and a combination link/activity LED for each port. Install this I/O module into the SP to provide additional SAS buses. Labeled 12Gb SAS v1.

    Note:  The optional back-end 12-Gb/s SAS module is not supported on all Unity storage systems.

    The four-port 12-Gb/s SAS I/O module can also be configured to support x8 lane cabling for the 80-drive DAE by combining ports 0 and 1 as back-end 2, or ports 2 and 3 to create back-end 4. The I/O module can also be configured to support both x4 lane and x8 lane back-ends simultaneously.

    Note:  If the 12-Gb/s SAS I/O module is to be configured for x8 lane cabling, the x8 lane cable must be inserted into the I/O module before persisting it. If the x8 lane cables are not inserted into the I/O module first, all four ports default to x4 lane ports.
    Figure 8. Four-port 12-Gb/s SAS locations
    4-port 12-Gb SAS I/O module with callouts (1-4)
    Table 10. Four-port 12-Gb/s SAS location details
    Location
    Description
    Location
    Description
    Push button latch handle and part number label
    12-Gb/s mini-SAS HD port
    Power/fault LED
    Port link/activity LED

    This four-port 12-Gb/s SAS I/O module has two different types of status LEDs.

    Table 11. Four-port 12-Gb/s SAS LED descriptions
    LED
    Location
    Color
    State
    Description
    Power/Fault
    Green
    On
    I/O module is powered on.
    Amber
    On
    I/O module has faulted.
    Off
    I/O module is powered off.
    Link/activity
    Blue
    On
    Network connection
    Blue
    Blinking
    Transmit/receive activity
    Off
    No activity
    Four-port 16-Gb/s Fibre Channel

    The four-port 16-Gb/s FC I/O module comes with four optical (fibre) ports, one power/fault LED, and a link/activity LED for each optical port. This I/O module can interface at speeds of 4, 8, and 16 Gb/s FC for host or initiator layered connections. Labeled 16Gb Fibre v3.

    Figure 9. Four-port 16-Gb/s Fibre Channel locations
    4-port 16-Gb FC I/O module with callouts (1-4)
    Table 12. Four-port 16-Gb/s Fibre Channel location details
    Location
    Description
    Location
    Description
    Push button latch handle and part number label
    16-Gb/s FC port
    Power/fault LED
    Port link/activity LED (blue)

    This four-port 16-Gb/s FC I/O module has two different types of status LEDs.

    Table 13. Four-port 16-Gb/s Fibre Channel LED descriptions
    LED
    Location
    Color
    State
    Description
    Power/Fault
    Green
    On
    I/O module is powered on.
    Amber
    On
    I/O module has faulted.
    Off
    I/O module is powered off.
    Link/activity
    Blue
    On
    Network connection
    Blue
    Blinking
    Small form-factor pluggable (SFP+) transceiver module faulted, unsupported, or optical cable fault.
    Off
    No network connection
    Four-port 10-Gb/s optical

    The four-port 10-GbE optical SFP or active/passive TwinAx I/O module with four 10-Gb/s ports, one power/fault LED, and link/activity LED for each port. This I/O module can interface at 10 Gb/s and supports both IP(file) and iSCSI (Block) on the same IO module. Ports can be configured as both IP and iSCSI simultaneously. Labeled 10 GbE v5.

    Figure 10. Four-port 10-Gb/s optical locations
    4-port 10-GbE I/O module with callouts (1-4)
    Table 14. Four-port 10-Gb/s optical location details
    Location
    Description
    Location
    Description
    Push button latch handle and part number label
    10Gb/s optical or TwinAx Ethernet port
    Power/fault LED
    Port link/activity LED

    This four-port 10-GbE optical SFP or active/passive TwinAx I/O module has two types of status LEDs.

    Table 15. Four-port 10-Gb/s optical LED descriptions
    LED
    Location
    Color
    State
    Description
    Power/Fault
    Green
    On
    I/O module is powered on.
    Amber
    On
    I/O module has faulted.
    Off
    I/O module is powered off.
    Link/activity
    Green
    On
    Network connection
    Green
    Blinking
    Small form-factor pluggable (SFP+) transceiver module faulted, unsupported, or optical cable fault.
    Off
    No network connection
    Four-port 10GBASE-T

    The four-port 10-GbE BaseT I/O module comes with four 10-Gb/s RJ-45 ports, one power/fault LED, activity LED, and link LED for each port. This I/O module can interface at speeds of 1 Gb/s and 10 Gb/s and supports both IP(file) and iSCSI (Block) on the same IO module. Ports can be configured as both IP and iSCSI simultaneously. Labeled 10GbE BaseT v2.

    Figure 11. Four-port 10GBASE-T locations
    4-port 10-GbE I/O module with callouts (1-5)
    Table 16. Four-port 10GBASE-T location details
    Location
    Description
    Location
    Description
    Push button latch handle and part number label
    Link
    Power/fault LED
    Activity
    RJ-45 (copper) port

    This four-port 10-GbE BaseT I/O module has three types of status LEDs.

    Table 17. Four-port 10GBASE-T LED descriptions
    LED
    Location
    Color
    State
    Description
    Power/Fault
    Green
    On
    I/O module is powered on.
    Amber
    On
    I/O module has faulted.
    Off
    I/O module is powered off.
    Link
    Green
    On
    Network connection
    Off
    No network connection
    Activity
    Amber
    Blinking
    Transmit/receive activity
    Off
    No activity
    Four-port 1GBASE-T

    The four-port 1-GbE BaseT I/O module comes with four 1-Gb/s RJ-45 ports, one power/fault LED, activity LED, and link LED for each port. This I/O module can interface at speeds of 10 Mb/s, 100 Mb/s, and 1000 Mb/s. Supports both IP(file) and iSCSI (Block) on the same IO module. Ports can be configured as both IP and iSCSI simultaneously. Labeled 10GbE BaseT v2.

    Figure 12. Four-port 1GBASE-T locations
    4-port 1-Gb Base-TI/O module with callouts (1-5)
    Table 18. Four-port 1GBASE-T location details
    Location
    Description
    Location
    Description
    Push button latch handle and part number label
    Link
    Power/fault LED
    Activity
    RJ-45 (copper) port

    This four-port 1-GbE BaseT I/O module has three types of status LEDs.

    Table 19. Four-port 1GBASE-T LED descriptions
    LED
    Location
    Color
    State
    Description
    Power/Fault
    Green
    On
    I/O module is powered on.
    Amber
    On
    I/O module has faulted.
    Off
    I/O module is powered off.
    Link
    Green
    On
    Network connection
    Off
    No network connection
    Activity
    Amber
    Blinking
    Transmit/receive activity
    Off
    No activity
    Two-port 10Gb/s optical

    The two-port 10-Gb/s optical SFP or active/passive TwinAx I/O module with two 10-Gb/s ports, one power/fault LED, and link/activity LED for each port. This I/O module can interface at 10 Gb/s and supports full iSCSI Offload. Supports both IP (file) and full iSCSI Offload (Block) on the same IO module. Ports can be configured as both IP and iSCSI simultaneously. Labeled 10 GbE V6.

    Figure 13. Two-port 10Gb/s optical locations
    2-port 10-GbE I/O module with callouts (1-4)
    Table 20. Two-port 10Gb/s optical location details
    Location
    Description
    Location
    Description
    Push button latch handle and part number label
    10-Gb/s optical SFP or active TwinAx port
    Power/fault LED
    Port link/activity LED

    This two-port 10-Gb/s optical SFP or active/passive TwinAx I/O module has two types of status LEDs.

    Table 21. Two-port 10Gb/s optical LED descriptions
    LED
    Location
    Color
    State
    Description
    Power/Fault
    Green
    On
    I/O module is powered on.
    Amber
    On
    I/O module has faulted.
    Off
    I/O module is powered off.
    Link/activity
    Green
    On
    Network connection
    Green
    Blinking
    Small form-factor pluggable (SFP+) transceiver module faulted, unsupported, or optical cable fault.
    Off
    No network connection

    Small form-factor pluggable (SFP) transceiver modules

    Certain I/O modules use a small form-factor pluggable plus (SFP+) transceiver module for cable connections. The SFP+ transceiver modules connect to Lucent Connector (LC) type interface (see Lucent Connector type interface for more information) optical fibre cables. These SFP+ transceiver modules are input/output (I/O) devices. These SFP+ modules are hot swappable. This means that you can install and remove an SFP+ module while the component is operating.

    Figure 14 shows an example of an SFP+ module.

    Figure 14. Example of an SFP+ module
    Example of an SFP+ module
    Table 22. SFP+ module descriptions
    Location
    Description
    1
    Dust plug (protective cap)
    2
    Bale clasp latch
    3
    Send or transmit (TX) optical bore
    4
    Receive (RX) optical bore

    Lucent Connector type interface

    The Lucent Connector (LC) type interface was developed by Lucent Technologies (hence, Lucent Connector). It uses a push-pull mechanism. LC connectors are normally held together in a multimode duplex configuration with a plastic clip.

    These cables are usually colored orange for OM2 multimode optical fiber type cables, aqua for OM3 multimode optical fiber type cables, and yellow for single mode optical fiber type cables. The multimode cables have the duplex connectors encased in a gray plastic covering. The single mode cables are encased in a blue plastic covering.

    To determine the send or transmit (TX) and receive (RX) ferrules (connector ends), these cables will show a letter and numeral (for example A1 and A2 for the TX and RX, respectively) or a white and yellow rubber gasket (jacket) for the send or transmit (TX) and receive (RX) ends. Figure 15 shows an example of LC-type connectors.

    Figure 15. Example of LC-type connectors
    Example of LC-type connectors
    Table 23. LC-type connector details
    Location
    Description
    1
    Cable
    2
    Rubber gasket (jacket), send or transmit (TX)
    3
    Rubber gasket (jacket), receive (RX)
    4
    Ferrule (connector end to SFP+ module)

    SP power supply module

    Figure 16 shows the SP power supply module. Each power supply includes three LEDs (AC, DC, and fault). A latch on the module locks it into place to ensure proper connection.

    Figure 16. SP latch, power supply (power in) recessed connector (plug), and status LEDs
    Power supply module with numbered callouts
    NOTICE  The power supply used in your storage system must meet the storage system power requirements and must be the same type of power supply to be used in both SPs (SP A and B). You cannot mix power supply types.

    Table 24 describes the power supply (fault and power on) LEDs.

    Table 24. SP power supply (fault and power on) LEDs
    LED
    Location
    Color
    State
    Description
    AC power (input)
    Green
    On
    AC Power on
    Off
    AC Power off, verify source power
    DC power (output)
    Green
    On
    DC Power on
    Off
    DC Power off, verify source power
    Fault
    Amber
    On
    Power supply or backup fault, check cable connection
    Blinking
    BIOS, POST and OS booting up or system overheating
    Off
    No fault or power off

    Storage processor internal components

    Included within the SP are the following replaceable components:

    • Memory modules
    • Battery backup unit (BBU)
    • SSD internal disk
    • Cooling modules (5)
    Memory modules

    Four memory module slots reside on the SP printed circuit board (motherboard) within the SP. Depending on the model, three or four of these DIMM slots will be populated with 8 GB, 16 GB, or 32 GB DIMMs. DIMMs used in Unity systems support error-correcting code (ECC) memory.

    Batter backup unit (BBU)

    The SP includes a Lithium-ion (Li-ion) internal battery or BBU that powers the associated SP module during a power event.

    SSD internal disk

    Each SP has an internal disk on at top side of the SP motherboard and is located adjacent to cooling module 4.

    Cooling modules

    Five redundant cooling modules connect to the motherboard within the SP to provide continuous airflow through the front disks and through the rear SP to keep the DPE components at optimal operating temperatures. Within each SP assembly are two adaptive cooling zones managed by the five internal cooling modules. Cooling modules 0-2 direct airflow through zone 1 and cooling modules 3 and 4 direct airflow though zone 2.

    Note:  An SP will perform a protective thermal shutdown if two cooling modules fault within the same SP.