DS8100 (Model 921 and Model 931)
The IBM System Storage DS8100, which is Model 921 and Model 931, offers many
features.
The DS8100 provides the following features:
v Dual 2-way processor complex
v Up to 128 disk drives, for a maximum capacity of 64 TB
v Up to 128 GB of processor memory (cache)
v Up to 16 fibre channel/FICON or ESCON host adapters
The DS8100 base models can support one expansion model. With one expansion
model, you can expand the capacity of the Model 921 or Model 931 with up to 384
disk drives, for a maximum capacity of 192 TB.
Note: IBM service representatives can upgrade a Model 921 or Model 931 in the
field when you order a model conversion to a Model 922, Model 932, Model
9A2, or Model 9B2. There are no available model conversions from Models
92x/9Ax to Models 93x/9Bx.
Figure 3 shows the maximum configuration of a Model 921 or Model 931, which is
the 921 or the 931 base model plus one 92E expansion model.
Fans/Plenum
Fan
Sense
RPC
Fan
Sense
PPS
PPS
Disk Drive
Set
Disk Drive
Set
Disk Drive
Set
Disk Drive
Set
Processor
2-way
Processor
2-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
1w2rzq
Base Model
128 Drives
Expansion Model
256 Drives
Management Console
Keyboard Display
Ethernet Switches
Figure 3. Maximum configuration for Model 921 or Model 931
4 DS8000 User’s Guide
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