IBM System Storage DS5020, Инструкция по установке, использованию и обслуживанию

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Before you install or remove E-DDM CRUs, review the following information:
v Blank trays: A storage subsystem without a full set of E-DDMs (16) contains
blank trays in the unused drive bays. Before installing new E-DDMs, you must
remove these empty trays. Save the empty trays for future use. Each of the 16
bays must always contain either a blank tray or a hot-swap E-DDM.
For proper cooling and EMC protection, do not leave a drive slot open without
either a drive blank or an E-DDM CRU inserted.
v
E-DDM CRUs:
– The DS5020 storage subsystem supports 4 Gbps Fibre Channel, SATA, and
FC-SAS E-DDMs. The link rate setting speed must be set accordingly. See
“Verifying the link rate setting” on page 140 for more information.
– When adding E-DDM CRUs, if you are not installing all 16 E-DDM CRUs into
the storage subsystem, install the E-DDM CRUs from left to right
consecutively.
– For optimum performance, never insert an E-DDM into a storage subsystem
without first confirming the drive firmware level. In the event of a drive
firmware mismatch, schedule down time as soon as possible to upgrade the
drive firmware to the same version. For information about supported drive
firmware versions, refer to the IBM Storage Systems support Web site:
http://www.ibm.com/systems/support/storage/disk
– Use of non-supported drives in the drive modules can cause the storage
subsystem to fail.
– In configurations with mixed storage expansion enclosures, all storage
expansion enclosures on a fibre loop must be operating at the same interface
speed.
– Make sure that the speed of the E-DDM CRU you are adding is supported in
the storage subsystem. For example, do not install a 2 Gbps E-DDM CRUs in
a storage subsystem that supports only 4 Gbps E-DDMs.
– E-DDM CRUs are not interchangeable between DS5020/EXP520 and EXP810
storage expansion enclosures, unless you purchase and enable the Attach
EXP810 to DS5020 Activation feature option. Contact your IBM marketing
representative or IBM reseller for more information.
– After you remove an E-DDM CRU, wait 70 seconds before replacing or
reseating it to allow it to properly spin down. Failure to do so might cause
undesired events.
– When determining what E-DDM CRU to add, there are many factors to base
your decision on in addition to the drive capacity. Here is a partial list of the
factors that differentiate a drive:
- Drive capacity
- Drive interface (such as FC, SAS, or SATA)
- FDE capability
- Media options (such as SSD or spinning media)
- T10 PI support
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IBM System Storage DS5020 Storage Subsystem: Installation, User’s, and Maintenance Guide