IBM DS8880 Series Introduction And Planning Manual page 118

Configuration rules for host adapters
Use the following configuration rules and ordering information to help you order
host adapters.
When you configure your storage system, consider the following issues when you
order the host adapters:
v What are the minimum and maximum numbers of host adapters that I can
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DS8880 Introduction and Planning Guide
Table 56. Required I/O enclosures for all-flash DS8886F (models 985 and 85E, or 986 and
86E)
Processor type Storage frame
8-core, 16-core, or Base frame
24-core
16-core, or 24-core Expansion frame
Notes:
1. Each High Performance Flash Enclosure Gen2 feature represents one High Performance
Flash Enclosure Gen2 pair, and a pair of flash RAID adapters and required cables. The
maximum quantity is two High Performance Flash Enclosure Gen2 features for each
I/O enclosure feature in the storage system.
2. Each I/O enclosure feature represents an I/O enclosure pair. Each I/O enclosure pair
can support two High Performance Flash Enclosure Gen2 pair.
Table 57. Required I/O enclosures for all-flash DS8888F (models 988 and 88E)
Processor type Storage frame
24-core or Base frame
48-core
48-core First expansion
frame
48-core Second expansion
frame
Notes:
1. Each High Performance Flash Enclosure Gen2 feature represents one High Performance
Flash Enclosure Gen2 pair, and a pair of flash RAID adapters and required cables. The
maximum quantity is two High Performance Flash Enclosure Gen2 features for each
I/O enclosure feature in the storage system.
2. Each I/O enclosure feature represents an I/O enclosure pair. Each I/O enclosure pair
can support two High Performance Flash Enclosure Gen2 pair.
3. The first two feature 1602 in the first expansion frame each require a flash RAID
adapter pair (feature 1604) in the base frame. The first two feature 1602 in the second
expansion frame each require a flash RAID adapter pair (feature 1604) in the base
frame. The last four feature 1602 in the second expansion frame each require a feature
1604 adapter in the first expansion frame.
install?
High Performance
Flash Enclosure
Gen2 pair features
1
(1600)
1 - 4
1 - 4
High
Performance
Flash Enclosure High
Gen2 pair with Performance
flash RAID Flash Enclosure
controllers Gen2 pair
1
features (1600) features (1602)
1 - 4 n/a
1 - 4 1 - 2
n/a 1 - 6
Required I/O
enclosure features
2
(1303)
2
2
Required I/O
enclosure
2
features (1303)
3
2
2
n/a