Loop ID and Disk Enclosure ID Naming Rules
Loop ID
Each port on an expansion module corresponds to a fixed loop ID, as shown in orange and blue marks in Figure 7-18, Figure 7-19, and Figure 7-20.
- SAS disk enclosures can connect to 12 Gbit/s SAS expansion modules in slots IOM H5/L5 to IOM H8/L8.
- Smart disk enclosures can connect to 100 Gbit/s RDMA expansion modules in slots IOM H1/L1 to IOM H12/L12.
Disk Enclosure ID
DAEXXX indicates a disk enclosure ID. The first X indicates the controller enclosure ID, the second X indicates the loop ID, and the third X indicates the number of disk enclosures connected in a loop.
- For loops 0 to 15, the second X is 0, 1, ..., 8, 9, A, B, C, D, E, and F, and the third X is 0 or 1 (0 for the first disk enclosure and 1 for the second disk enclosure in the loop).
- For loops 16 to 19, the second X can be 0, 1, 2, or 3, and the third X can be 8, 9, ... (8 for the first disk enclosure and 9 for the second disk enclosure in the loop).
- For example, the ID of the first disk enclosure in loop 15 of controller enclosure 0 is DAE0F0.
Table 7-7 describes the rules for naming disk enclosure IDs in each loop.
Loop ID |
Disk Enclosure ID |
|---|---|
0 |
DAE000 to DAE007 |
1 |
DAE010 to DAE017 |
2 |
DAE020 to DAE027 |
3 |
DAE030 to DAE037 |
4 |
DAE040 to DAE047 |
5 |
DAE050 to DAE057 |
6 |
DAE060 to DAE067 |
7 |
DAE070 to DAE077 |
8 |
DAE080 to DAE087 |
9 |
DAE090 to DAE097 |
10 |
DAE0A0 to DAE0A7 |
11 |
DAE0B0 to DAE0B7 |
12 |
DAE0C0 to DAE0C7 |
13 |
DAE0D0 to DAE0D7 |
14 |
DAE0E0 to DAE0E7 |
15 |
DAE0F0 to DAE0F7 |
16 |
DAE008 to DAE00F |
17 |
DAE018 to DAE01F |
18 |
DAE028 to DAE02F |
19 |
DAE038 to DAE03F |
20 |
DAE048 to DAE04F |
21 |
DAE058 to DAE05F |
22 |
DAE068 to DAE06F |
23 |
DAE078 to DAE07F |