• Overview

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    Overview

    Additional resources

    As part of an improvement effort, revisions of the software and hardware are periodically released. Therefore, some functions described in this document might not be supported by all versions of the software or hardware currently in use. The product release notes provide the most up-to-date information on product features. Contact your technical support professional if a product does not function properly or does not function as described in this document.
    Where to get help

    Support, product, and licensing information can be obtained as follows:

    For product and feature documentation or release notes, go to Unity Technical Documentation at: www.emc.com/en-us/documentation/unity-family.htm.

    For information about products, software updates, licensing, and service, go to Online Support (registration required) at: https://Support.EMC.com. After logging in, locate the appropriate Support by Product page.

    For technical support and service requests, go to Online Support at: https://Support.EMC.com. After logging in, locate Create a service request. To open a service request, you must have a valid support agreement. Contact your Sales Representative for details about obtaining a valid support agreement or to answer any questions about your account.

    Special notice conventions used in this document
    Indicates a hazardous situation which, if not avoided, will result in death or serious injury.
    Indicates a hazardous situation which, if not avoided, could result in death or serious injury.
    Indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.
    Addresses practices not related to personal injury.
    Presents information that is important, but not hazard-related.

    Handling replaceable units

    This section describes the precautions that you must take and the general procedures that you must follow when removing, installing, and storing any replaceable unit.

    Avoiding electrostatic discharge (ESD) damage

    When replacing or installing hardware units, you can inadvertently damage the sensitive electronic circuits in the equipment by simply touching them. Electrostatic charge that has accumulated on your body discharges through the circuits. If the air in the work area is very dry, running a humidifier in the work area will help decrease the risk of ESD damage. Follow the procedures below to prevent damage to the equipment.

    Be aware of the following requirements:

    • Provide enough room to work on the equipment.
    • Clear the work site of any unnecessary materials or materials that naturally build up electrostatic charge, such as foam packaging, foam cups, cellophane wrappers, and similar items.
    • Do not remove replacement or upgrade units from their antistatic packaging until you are ready to install them.
    • Before you begin service, gather together the ESD kit and all other materials you will need.
    • Once servicing begins, avoid moving away from the work site; otherwise, you may build up an electrostatic charge.
    • Use ESD anti-static gloves or an ESD wristband (with strap).

      If using an ESD wristband with a strap:

      • Attach the clip of the ESD wristband to the ESD bracket or bare metal on a cabinet/rack or enclosure.
      • Wrap the ESD wristband around your wrist with the metal button against your skin.
      • If a tester is available, test the wristband.
    • If an emergency arises and the ESD kit is not available, follow the procedures in Emergency Procedures (without an ESD kit).

    Emergency procedures (without an ESD kit)

    In an emergency when an ESD kit is not available, use the following precautions to reduce the possibility of an electrostatic discharge by ensuring that your body and the subassembly are at the same electrostatic potential.

    These precautions are not a substitute for the use of an ESD kit. Follow them only in the event of an emergency.
    • Before touching any unit, touch a bare (unpainted) metal surface of the cabinet/rack or enclosure.
    • Before removing any unit from its antistatic bag, place one hand firmly on a bare metal surface of the cabinet/rack or enclosure, and at the same time, pick up the unit while it is still sealed in the antistatic bag. Once you have done this, do not move around the room or touch other furnishings, personnel, or surfaces until you have installed the unit.
    • When you remove a unit from the antistatic bag, avoid touching any electronic components and circuits on it.
    • If you must move around the room or touch other surfaces before installing a unit, first place the unit back in the antistatic bag. When you are ready again to install the unit, repeat these procedures.

    Hardware acclimation times

    Systems and components must acclimate to the operating environment before applying power. This requires the unpackaged system or component to reside in the operating environment for up to 16 hours in order to thermally stabilize and prevent condensation.

    Refer to the table, Table 1, to determine the precise amount of stabilization time required.

    Table 1. Hardware acclimation times (systems and components)
    If the last 24 hours of the TRANSIT/STORAGE environment was this:
    …and the OPERATING environment is this:
    …then let the system or component acclimate in the new environment this many hours:
    Temperature
    Humidity
    Nominal

    68-72°F (20-22°C)

    Nominal

    40-55% RH

    Nominal 68-72°F (20-22°C)

    40-55% RH

    0-1 hour
    Cold

    <68°F (20°C)

    Dry

    <30% RH

    <86°F (30°C)
    4 hours
    Cold

    <68°F (20°C)

    Damp

    ≥30% RH

    <86°F (30°C)
    4 hours
    Hot

    >72°F (22°C)

    Dry

    <30% RH

    <86°F (30°C)
    4 hours
    Hot

    >72°F (22°C)

    Humid 30-45% RH
    <86°F (30°C)
    4 hours
    Humid 45-60% RH
    <86°F (30°C)
    8 hours
    Humid ≥60% RH
    <86°F (30°C)
    16 hours
    Unknown
    <86°F (30°C)
    16 hours
    • If there are signs of condensation after the recommended acclimation time has passed, allow an additional eight (8) hours to stabilize.
    • Systems and components must not experience changes in temperature and humidity that are likely to cause condensation to form on or in that system or component. Do not exceed the shipping and storage temperature gradient of 45°F/hr (25°C/hr).
    • Do NOT apply power to the system for at least the number of hours specified in the table, Table 1. If the last 24 hours of the transit/storage environment is unknown, then you must allow the system or component 16 hours to stabilize in the new environment.

    Removing, installing, or storing replaceable units

    Use the following precautions when removing, handling, or storing replaceable units.

    Some replaceable units have the majority of their weight in the rear of the component. Ensure that the back end of the replaceable unit is supported while installing or removing it. Dropping a replaceable unit could result in personal injury or damage to the equipment.
    • For a module that must be installed into a slot in an enclosure, examine the rear connectors on the module for any damage before attempting its installation.
    • A sudden jar, drop, or even a moderate vibration can permanently damage some sensitive replaceable units.
    • Do not remove a faulted replaceable unit until you have the replacement available.
    • When handling replaceable units, avoid electrostatic discharge (ESD) by wearing ESD anti-static gloves or an ESD wristband with a strap. For additional information, refer to Avoiding electrostatic discharge (ESD) damage.
    • Avoid touching any exposed electronic components and circuits on the replaceable unit.
    • Never use excessive force to remove or install a replaceable unit. Take time to read the instructions carefully.
    • Store a replaceable unit in the antistatic bag and the specially designed shipping container in which you received it. Use the antistatic bag and special shipping container when you need to return the replaceable unit.
    • Replaceable units must acclimate to the operating environment before applying power. This requires the unpackaged component to reside in the operating environment for up to 16 hours in order to thermally stabilize and prevent condensation. Refer to Hardware acclimation times to ensure the replaceable unit has thermally stabilized to the operating environment.
    • Front bezels should always be attached to ensure EMI compliance. Make sure you reattach the bezel after replacing a component.
    • Each slot should contain a component or filler panel to ensure proper air flow throughout the system.

    Unpacking a part

    Procedure
    1. Wear ESD gloves or attach an ESD wristband to your wrist and the enclosure in which you are installing the part.
    2. Unpack the part and place it on a static-free surface.
    3. If the part is a replacement for a faulted part, save the packing material to return the faulted part.

    Standard touch point colors

    Touch points are component locations where you can:

    • Grip the hardware to remove or install a component.
    • Open or close a latch.
    • Turn a knob to open, close, or adjust a component.

    Standard touch point colors are terra-cotta (orange) or blue.

    Within this documentation, the color orange is used instead of terra-cotta for simplicity.
    Table 2. Standard touch point colors
    Touch point color
    Description
    Terra-cotta

    (orange)

    This color indicates that you can perform the task, such as remove a component with a terra-cotta (orange) lever, while the system remains powered (up/on).

    Some tasks may require additional steps.
    Blue

    This color indicates that a shutdown of the system or component is required before you can perform the task, such as removing a component with a blue lever.

    Verify shipping package contents

    Confirm that you receive all necessary equipment needed to perform the data in place conversion.

    Verify that you received the following:

    • Storage processor (SP) assembly (2)
    • Cable clamp kit
      • Cable clamps (6 total, 3 for each SP)
      • Cable clamp labels (6 total, 3 for each SP)
    • Data in place conversion Insert (1)
    • Product Serial Number Tag (PSNT) sticker sheet (1)

    Valid hardware upgrade paths

    Review this information to ensure that your current storage processor (SP) assembly is eligible for an upgrade to the target storage processor assembly.

    Upgrade limitations

    The following configurations are not eligible for data in place conversion:

    • A storage processor assembly cannot be converted from Hybrid to All-Flash, or from All-Flash to Hybrid.
    • A storage processor assembly cannot be converted to a lower model number from a higher model number.
    • DC-powered Unity systems are not eligible for conversion.
    Valid upgrade paths
    Table 3. Upgrade path for Unity Hybrid systems
    Source SP model
    Target SP model
    Unity 300
    Unity 400
    Unity 500
    Unity 600
    Unity 400
    Unity 500
    Unity 600
    Unity 500
    Unity 600
    Unity 600
    Not applicable
    Table 4. Upgrade path for Unity All-Flash systems
    Source SP model
    Target SP model
    Unity 300F
    Unity 350F
    Unity 400F
    Unity 450F
    Unity 500F
    Unity 550F
    Unity 600F
    Unity 650F
    Unity 350F
    Unity 450F
    Unity 550F
    Unity 650F
    Unity 400F
    Unity 450F
    Unity 500F
    Unity 550F
    Unity 600F
    Unity 650F
    Unity 450F
    Unity 550F
    Unity 650F
    Unity 500F
    Unity 550F
    Unity 600F
    Unity 650F
    Unity 550F
    Unity 650F
    Unity 600F
    Unity 650F
    Unity 650F
    Not applicable

    Choosing an offline or an online conversion

    Before starting the upgrade, choose whether to perform an online or offline data in place conversion.

    Data in place conversions can be performed with data online or offline. All user data and configurations are saved in both conversions.

    During an online data in place conversion, users have continued access to data on the system but I/O operations may be limited. The online conversion takes longer to complete than an offline conversion.

    Online conversions are only available in version 4.2.1.x or later.

    During an offline data in place conversion, both storage processors are powered off. Data on the storage processors is unavailable. Ensure that downtime is scheduled before proceeding with an offline conversion.