IBM TotalStorage EXP100, Инструкция по установке, использованию и обслуживанию

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Receiving the replacement ESM CRU
If you need to replace a failed hot-swap ESM CRU in an EXP100, you must first
verify that the replacement ESM CRU firmware is compatible with the firmware of
the existing ESM module in the DS4000 EXP100 expansion enclosure. A loss of
data access and, in some cases, a loss of data will result if ESM CRUs with
incompatible firmware are installed in the same DS4000 EXP100 expansion
enclosure. Note the following:
v
Do not insert a replacement ESM CRU into the DS4000 EXP100 expansion
enclosure until ESM firmware compatibility is confirmed.
v Do not rely solely on the CRU part number of the installed ESM to determine the
ESM firmware level because the firmware in the existing EXP100 ESMs may
have already been updated to newer ESM firmware versions.
Perform the following steps before you replace an ESM CRU in an EXP100.
1. Determine the ESM firmware version of the existing ESM CRU in the EXP100
expansion enclosure. Use the procedure described in “Determining firmware
levels” on page 11.
Note: Do not rely on the CRU part number of an already installed ESM to
determine the ESM firmware version, because the existing ESM firmware
might have been previously updated.
2. Find the ESM CRU part number on the CRU shipping box. Use Table 4 on page
7 to determine the ESM firmware version of the replacement ESM CRU based
on its part number. You can also use Table 13 on page 88 to learn more about
ESM CRU compatibility.
3. If the firmware version of the replacement ESM CRU is:
v Not compatible with the firmware version of the existing ESM module in the
DS4000 EXP100 expansion enclosure, do not open the ESM CRU box . You
cannot replace an ESM CRU with firmware that is incompatible with the
firmware of the existing ESM module in the DS4000 EXP100 expansion
enclosure. Contact IBM technical support, your IBM reseller, or your IBM
representative for an EXP100 CRU that is compatible with the ESM firmware
of the existing ESM module.
v
Compatible with the firmware version of the existing ESM module in the
DS4000 EXP100 expansion enclosure, then replace the failed hot-swap ESM
CRU as described in “Steps for replacing a hot-swap ESM” on page 92.
Continue with step 4.
4. After you have replaced the failed ESM CRU with the compatible replacement
ESM CRU, you must verify that the precise firmware versions match. For
example, you might have removed an ESM CRU with R1 ESM firmware version
953x or earlier and replaced it with an ESM CRU with a different level of R1
ESM firmware version 953x or earlier; or you might have removed an ESM CRU
with R2 ESM firmware version 955x or later and replaced it with an ESM CRU
with a different level of R2 ESM firmware version 955x or later.
Continue to the next section, “Upgrading firmware when replacing a failed
hot-swap ESM” on page 87, and perform the upgrade procedure that is
appropriate for your configuration.
If you need further assistance, please contact IBM technical support, your IBM
reseller, or your IBM representative to find out which EXP100 CRU is compatible
with the ESM firmware of your existing ESM module.
86
IBM TotalStorage DS4000 EXP100 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide
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