DS8800 overview
The DS8800 is the newest addition to the IBM System Storage DS series. The
DS8800 adds Model 951 (base frame) and 95E (expansion unit) to the 242x machine
type family.
Features and functions of the DS8800
The following describes the features and functions of the DS8800.
High-density storage enclosure
The DS8800 previously introduced the storage enclosure that supports 24
small form factor (SFF) 2.5” SAS drives in a 2U (height) factor. The DS8800
also supports a new high-density and lower-cost-per-capacity large form
factor (LFF) storage enclosure. This enclosure accepts 3.5" SAS drives,
offering 12 drive slots. The LFF enclosure has a different appearance from
the front than does the SFF enclosure, with its 12 drives slotting
horizontally rather than vertically.For more information on storage
enclosures, see “ DS8800 storage enclosure overview” on page 11.
High-density frame design
The DS8800 base model (951) supports up to 240 disks. Up to three
additional expansion frames (Model 95E) can be added. The first expansion
model supports up to 336 disks, the second expansion model supports up
to 480 disks, and the third expansion model supports an additional 480
disks. The DS8800 can support a total of 1,536 drives (four frames) versus
1,024 drives (five frames in a DS8700) in a significantly smaller footprint,
allowing higher density and preserving valuable raised floor space in
Fans/Plenum
Fan
Sense
RPC
Fan
Sense
Fan
Sense
PPS
PPS
Disk Drive
Set
Disk Drive
Set
Disk Drive
Set
Disk Drive
Set
Processor
4-way
Processor
4-way
I/O
Enclosures
Adapters
I/O
Enclosures
Adapters
I/O
Enclosures
Adapters
I/O
Enclosures
Adapters
Battery
Battery
Fans/Plenum
PPS
PPS
Disk Drive
Set
Disk Drive
Set
Disk Drive
Set
Disk Drive
Set
Disk Drive
Set
Disk Drive
Set
Disk Drive
Set
Disk Drive
Set
I/O
Enclosures
Adapters
I/O
Enclosures
Adapters
I/O
Enclosures
Adapters
I/O
Enclosures
Adapters
Battery
Battery
Fans/Plenum
PPS
PPS
Disk Drive
Set
Disk Drive
Set
Disk Drive
Set
Disk Drive
Set
Disk Drive
Set
Disk Drive
Set
Disk Drive
Set
Disk Drive
Set
f2c01336
Base Model
128 Drives
Expansion Model
256 Drives
Expansion Model
256 Drives
Laptop
Management Console
Ethernet
Switch
Ethernet
Switch
Battery
Figure 3. Configuration for 941 (4-way) with two 94E expansion models
Chapter 1. Introduction to IBM System Storage DS8000 series
5
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