IBM DS8800

enclosures that are installed on that storage unit. Look in the last two columns to
find the number of I/O enclosures and device adapters that you need on the
storage unit.
Table 29. Model 941 required I/O enclosures and device adapters (based on disk
enclosures)
Storage
Unit Type
Storage Unit
Configuration
Disk Enclosure
Features (12x0)
Required Device
Adapter Features
(30x1) (Note 1
and 2)
Required I/O
Enclosure
Features (1301)
941
(2-way)
storage
unit
Base model
(stand-alone)
1-2 1 2
3-4 2 2
941
(4-way)
storage
unit
Base model
(stand-alone)
1-2 1 2
3-4 2 2
Base model +1
expansion model
5-6 3
(2 in base model;
1 in expansion
model)
4
(2 in base model;
2 in expansion
model)
7-8 4
(2 in base model;
2 in expansion
model)
4
(2 in base model;
2 in expansion
model)
9-10 5
(2 in base model;
3 in expansion
model)
4
(2 in base model;
2 in expansion
model)
11-12 6
(2 in base model;
4 in expansion
model)
4
(2 in base model;
2 in expansion
model)
Base model +2
expansion models
13-14 7
(3 in base model;
4 in first
expansion
model)
4
(2 in base model;
2 in first
expansion
model)
15-20 8
(4 in base model;
4 in first
expansion
model)
4
(2 in base model;
2 in first
expansion
model)
Notes:
1. Each device adapter feature code represents one device adapter pair.
2. The maximum quantity is two device adapter features for each I/O enclosure feature in
the storage unit.
3. Each I/O enclosure feature represents one I/O enclosure pair.
110 Introduction and Planning Guide