Dell PowerVault MD3620f Command Line Interface Manual page 254

and state information is returned in the form of an object graph. The object
graph contains all relevant logical and physical objects and their associated
state information for the storage array.
The set storageArray autoSupportConfig command collects configuration
and state information in this way:
• Automatic collection of the configuration and state information occurs
every 72 hours. The configuration and state information is saved to the
storage array zip archive file. The archive file has a time stamp that is used
to manage the archive files.
• Two storage array zip archive files are maintained for each storage array.
The zip archive files are kept on a physical disk. After the 72-hour time
period is exceeded, the oldest archive file is always overwritten during the
new cycle.
• After you enable automatic collection of the configuration and state
informationusing this command, an initial collection of information starts.
Collecting information after the you issue the command makes sure that
one archive file is available and starts the time stamp cycle.
You can run the set storageArray autoSupportConfig command on more than
one storage array.
Cache Block Size
When you define cache block sizes, use the 4-KB cache block size for storage
arrays that require I/O streams that are typically small and random. Use the 8-
KB cache block size when the majority of your I/O streams are larger than 4
KB but smaller than 8 KB. Use the 16-KB cache block size or the 32-KB cache
block size for storage arrays that require large data transfer, sequential, or
high-bandwidth applications.
The cacheBlockSize parameter defines the supported cache block size for all
of the virtual disks in the storage array. Not all RAID controller module types
support all cache block sizes. For redundant configurations, this parameter
includes all of the virtual disks that are owned by both RAID controller
modules within the storage array.
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Script Commands