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8
IBM TotalStorage DS4000 EXP100 Storage Expansion Enclosure: Installation, User's and Maintenance Guide
Table 5. EXP100 firmware release levels, CRU types, and supported DS4000s (continued)
EXP100
Firmware
ESM
release level
type
"Fourth
R3
release" on
page 10
(Current
release)
Important:
1. If the version of the ESM firmware in your EXP100 storage expansion enclosure
is not 956x or later, you must schedule time to upgrade the EXP100 ESM
firmware to the latest version posted on the Web as soon as possible. This is to
ensure that you take advantage of the quality enhancements and the
compatibility and availability of the EXP100 ESM and SATA drive FRUs/CRUs in
the future.
2. If the EXP100 ESM firmware is 953x or earlier, you must schedule down time
for ESM firmware upgrades. In addition, you must upgrade the EXP100 ESM to
the intermediate version of 9554 first before upgrading the ESM firmware to
956x or later.
3. SATA hard drive CRUs cannot be interchanged with the Fibre Channel hard
drive CRUs that are supported in other DS4000 series storage products.
If you need further assistance, 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.
First release: The first release of the DS4000 controller firmware and NVSRAM
was for DS4300 and DS4500 storage subsystems only, to support the attachment
of the EXP100 storage expansion enclosure. The controller firmware version is
05.41.1x.xx, and the associated EXP100 ESM firmware version is 953x.
This release has the following characteristics:
v The coexistence (intermix) of Fibre Channel drives and SATA drives in a DS4000
storage subsystem is not supported. This requires that the DS4000 storage
subsystem go through a special controller upgrade process to load the
05.41.1x.xx firmware, because the DS4000 storage subsystem will not see any
EXP100 enclosures or SATA drives until the controller firmware version
05.41.1x.xx is loaded.
v The EXP100 ESM has only Limited High Availability (LHA) support. Each ESM
physically controls seven even-numbered or odd-numbered drives. If the Fibre
Channel cabling to an ESM fails, the drives that belong to the ESM with the
cabling failure will fail-over to the surviving ESM only if the ESM remains inserted
in the EXP100 drive enclosure chassis. If the ESM fails or is removed from the
chassis, the controller will not be able to recognize any of the drives that were
managed by the failed or removed ESM and will mark them as failed.
Second release: The second release of the DS4000 controller firmware/NVSRAM
added support for DS4100 storage subsystems, in addition to the DS4500 and the
DS4300 storage subsystems, for attachment of the EXP100. The controller firmware
ESM
CRU part
firmware
number
version
39M6004
956x
(400 GB)
or later
and
39M6004
(250 GB)
Controller
Supported
firmware
DS4000s
versions
DS4800
06.15.16.xx
or later
DS4100
06.12.15.xx
DS4300
or later
DS4400
DS4500
High-
availability
support
Full (FHA)
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