Specifications

4–46 Planning Storagesets
Maximum Chunk Size for RAIDsets
Do not exceed the chunk sizes shown in Table 4–5 for a RAIDset. (The maximum
chunk size is derived by 2048/(d – 1) where d is the number of disk drives in the
RAIDset.)
Save Configuration
Indicate whether to save the subsystem’s configuration on the storage unit when you
initialize it:
■ NOSAVE_CONFIGURATION (default) means that the controller stores the
subsystem’s configuration in its nonvolatile memory only. Although this is
generally secure, the configuration could be jeopardized if the controller fails.
For this reason, you should initialize at least one of your storage units with the
SAVE_CONFIGURATION switch enabled.
Table 4–5. Maximum Chunk Sizes for a RAIDset
RAIDset Size Maximum Chunk Size
3 members 1024 blocks
4 members 682 blocks
5 members 512 blocks
6 members 409 blocks
7 members 341 blocks
8 members 292 blocks
9 members 256 blocks
10 members 227 blocks
11 members 204 blocks
12 members 186 blocks
13 members 170 blocks
14 members 157 blocks