Totalstorage Exp24 Disk Drawer And Tower; Ibm Totalstorage Exp24; Ibm System Storage - IBM Power 780 Technical Overview And Introduction

2.11.4 TotalStorage EXP24 disk drawer and tower

The TotalStorage EXP24 is available as a 4 EIA unit drawer and mounts in a 19-inch rack
(FC 5786). The front of the IBM TotalStorage EXP24 Ultra320 SCSI Expandable Storage Disk
Enclosure has bays for up to 12 disk drives, organized in two SCSI groups of up to six drives.
The rear also has bays for up to 12 disk drives, organized in two additional SCSI groups of up
to six drives, plus slots for the four SCSI interface cards. Each SCSI drive group can be
connected by either a Single Bus Ultra320 SCSI Repeater Card (FC 5741) or a Dual Bus
Ultra320 SCSI Repeater Card (FC 5742). In this way, the EXP24 can be configured as four
sets of six bays, two sets of 12 bays, or two sets of six bays plus one set of 12 bays.
The EXP24 drawer has three cooling fans and two power supplies to provide redundant
power and cooling. The SCSI disk drives contained in the EXP24 are controlled by PCI-X
SCSI adapters connected to the EXP24 SCSI repeater cards by SCSI cables. The PCI-X
adapters are located in the system unit or in an attached I/O drawer with PCI-X slots.
The 336 disk system maximum is achieved with a maximum of 24 disks in a maximum of
14 TotalStorage EXP24 disk drawers (FC 5786) or 14 TotalStorage EXP24 disk towers
(FC 5787).
Supported but cannot be ordered: The EXP24S SCSI disk drawer is supported with the
Power 770 and Power 780, but no longer orderable.

2.11.5 IBM TotalStorage EXP24

The IBM 7031 TotalStorage EXP24 Ultra320 SCSI Expandable Storage Disk Enclosure
supports up to 24 Ultra320 SCSI Disk Drives, arranged in four independent SCSI groups of
up to six drives or in two groups of up to 12 drives. Each SCSI drive group can be connected
by either a Single Bus Ultra320 SCSI Repeater Card or a Dual Bus Ultra320 SCSI Repeater
Card, allowing a maximum of eight SCSI connections per TotalStorage EXP24.
The IBM 7031 Model D24 (7031-D24) is an Expandable Disk Storage Enclosure that is a
horizontal 4 EIA by 19-inch rack drawer for mounting in equipment racks.
The IBM 7031 Model T24 (7031-T24) is an Expandable Disk Storage Enclosure that is a
vertical tower for floor-standing applications.
Notes:
A new IBM 7031 TotalStorage EXP24 Ultra320 SCSI Expandable Storage Disk
Enclosure cannot be ordered for the Power 770 and Power 780, therefore, only existing
7031-D24 drawers or 7031-T24 towers can be moved to the Power 770 and 780
servers.
AIX and Linux partitions are supported along with the usage of a IBM 7031
TotalStorage EXP24 Ultra320 SCSI Expandable Storage Disk Enclosure.

2.11.6 IBM System Storage

The IBM System Storage Disk Systems products and offerings provide compelling storage
solutions with superior value for all levels of business, from entry-level to high-end
storage systems.
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IBM Power 770 and 780 (9117-MMD, 9179-MHD) Technical Overview and Introduction