Hitachi MK-96RD621-08 User Manual page 26

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CU (control unit). The USP V/VM storage system supports a maximum of
256 logical CUs numbered sequentially from 00–FF. Each CU controls up to
256 LDEVs. LDEVs within the USP V/VM storage system are accessed by a
combination of CU number (00-FF) and device number (00–FF).
However, the CU number FF is reserved for the Command Control Interface
(CCI) operation. Therefore the CUs that can be used for the USP V/VM
program products operation are up to CU number FE. This means that the
number of CUs that can be used for the USP V/VM program products
operation are 255 per LDKC at the maximum.
The following table shows the example of the device numbers for CU.
Table 1-2
CU
Number
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
1-12
Hitachi Universal Storage Platform V/VM Hitachi Storage Navigator User's Guide
Example of Device Numbers for Each CU
Possible CU
Device Number
Numbers
0:00 to 10
0:FF
1:00 to
11
1:FF
2:00 to
12
2:FF
3:00 to
13
3:FF
4:00 to
14
4:FF
5:00 to 15
5:FF
6:00 to 16
6:FF
7:00 to 17
7:FF
8:00 to 18
8:FF
9:00 to 19
9:FF
A:00 to 1A
A:FF
B:00 to 1B
B:FF
C:00 to 1C
C:FF
D:00 to 1D
D:FF
E:00 to 1E
E:FF
F:00 to 1F
F:FF
About Storage Navigator Operations
Possible CU
Device Number
Numbers
10:00 to 20
10:FF
11:00 to
21
11:FF
12:00 to
22
12:FF
13:00 to
23
13:FF
14:00 to
24
14:FF
15:00 to 25
15:FF
16:00 to 26
16:FF
17:00 to 27
17:FF
18:00 to 28
18:FF
19:00 to 29
19:FF
1A:00 to 2A
1A:FF
1B:00 to 2B
1B:FF
1C:00 to 2C
1C:FF
1D:00 to 2D
1D:FF
1E:00 to 2E
1E:FF
1F:00 to 2F
1F:FF
Possible CU
Device Number
Numbers
20:00 to 30
20:FF
21:00 to
31
21:FF
22:00 to
32
22:FF
23:00 to
33
23:FF
24:00 to
34
24:FF
25:00 to 35
25:FF
26:00 to 36
26:FF
27:00 to 37
27:FF
28:00 to 38
28:FF
29:00 to 39
29:FF
2A:00 to 3A
2A:FF
2B:00 to 3B
2B:FF
2C:00 to 3C
2C:FF
2D:00 to 3D
2D:FF
2E:00 to 3E
2E:FF
2F:00 to 3F
2F:FF
Possible
Device
Numbers
30:00 to
30:FF
31:00 to
31:FF
32:00 to
32:FF
33:00 to
33:FF
34:00 to
34:FF
35:00 to
35:FF
36:00 to
36:FF
37:00 to
37:FF
38:00 to
38:FF
39:00 to
39:FF
3A:00 to
3A:FF
3B:00 to
3B:FF
3C:00 to
3C:FF
3D:00 to
3D:FF
3E:00 to
3E:FF
3F:00 to
3F:FF