IBM Z9, Planning Manual

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Table 2-3. Logical Path Summary by Control Unit
Control Unit
Maximum
Physical Links
Logical Paths
per Link
Maximum
Logical Paths
2105 Storage Control
2105 32 64 2048
3990 Storage Control
3990-2
3990-3
3990-6
16
16
16
Note 1
Note 1
Note 2
16
16
128
9343 Storage Controller
9343 D04
9343 DC4
4
4
64
64
64
64
3590 Magnetic Tape Subsystem
3590 2 64 128
3490 Magnetic Tape Subsystem
3490 D31, D32, D33, D34
3490 C10, C11, C12
3490 A01
3490 A10
3490 A02
3490 A20
1
1
2
4
4
8
16
16
16
16
16
16
16
16
32
64
64
128
2074 Console Support Controller
2074 002 2 32 64
3172 Interconnect Controller
3172-1 2 Note 3 16
3174 Establishment Controller
3174 12L (SNA only)
3174 22L (SNA only)
1
1
Note 3
Note 3
8
8
Notes:
1. 3990-2 and 3990-3 Storage Controls can have eight logical paths per side, two sides,
with a minimum of one logical path per adapter.
2. The 3990-6 Storage Control can have 64 logical paths per side, two sides, with a
maximum of 32 logical paths per adapter.
3. The 3172 Interconnect Controller and the 3174 Establishment Controller can have one
logical path per control unit header (CUH) with a maximum of eight CUHs per link.
2-8
PR/SM Planning Guide