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Attention: To attach DS4000 EXP drive expansion enclosures to a DS4500, refer
to the IBM System Storage DS4000 Hard Drive and Storage Expansion Enclosure
Installation and Migration Guide for the latest information on the required version of
the DS4500 controller firmware and the supported combination of enclosure types
intermix behind a DS4500 subsystem. In addition, you must purchase the FC/SATA
Enclosure Intermix premium option to combine DS4000 EXP100s or DS4000
EXP810s with SATA enhanced disk drive modules (E-DDMs) with DS4000
EXP700s, DS4000 EXP710s, or DS4000 EXP810s with fibre channel drives in the
same DS4500 Storage Subsystem configuration. The EXP700 expansion enclosure
must be upgraded to EXP710 by using the DS4000 EXP700 Models 1RU/1RX
Switched-ESM Option Upgrade Kit for intermixing with the EXP810 expansion
enclosures.
For detailed information about how to cable the storage subsystem and storage
expansion enclosures, see “Configuring the drive loops with storage expansion
enclosures” on page 77.
Supported storage expansion enclosure configurations and intermix
combinations
Although the DS4500 Storage Subsystem supports various types of DS4000
storage expansion enclosures, not all combinations of these supported storage
expansion enclosures are possible or supported as storage expansion enclosures
intermix within a DS4500 Storage Subsystem configuration. In addition, if you
intermix storage expansion enclosures with SATA and FC drives within a DS4500
Storage Subsystem configuration, an FC/SATA intermix premium feature must be
purchased for that DS4500 Storage Subsystem. For additional information about
Intermix configurations, see the IBM TotalStorage DS4000 Fibre Channel and Serial
ATA Intermix Premium Feature Installation Overview (GC26-7713-01).
Table 13 shows the maximum number of enclosures in a DS4500 drive loop, as well
as the maximum number of enclosures in the drive loop when intermixing supported
enclosures.
Table 13. Storage expansion enclosure configurations
EXP500 EXP100 EXP700 EXP710 EXP810
Maximum number of
enclosures in a DS4500
drive loop
11 8 8 8 7
Maximum number of
enclosures in a DS4500
drive loop when
intermixing with EXP500
11 Not Supported 10 Not Supported Not Supported
Maximum number of
enclosures in a DS4500
drive loop when
intermixing with EXP700
10 8 8 8 Not Supported
1
Maximum number of
enclosures in a DS4500
drive loop when
intermixing with EXP100
Not Supported 8 8 8 7
Maximum number of
enclosures in a DS4500
drive loop when
intermixing with EXP710
Not Supported 8 8 8 7
62 IBM TotalStorage DS4500 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide