IBM Advanced SerialRAID Adapters SA33-3285-02 User Manual page 366

Advanced serialraid adapters
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-n MaxReadSize
-b StartLBA
-c
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User's Guide and Maintenance Information
reassign operations. You must not use this flag when the ssa_certify
command is running concurrently on an active using system.
Specifies the maximum size, in kilobytes, of each read command that is sent
to the disk drive.
Default size for this flag = 3072 kilobytes
Minimum value that can be specified for this flag = 64 kilobytes
Maximum value that can be specified for this flag = 10240 kilobytes. Larger
values for the MaxReadSize can cause other requests to be delayed if the
ssa_certify command is run concurrently on an active using system
Specifies the RAID-5 array LBA from where the certify operation should start. If
this flag is not set, the certify operation starts from LBA 0.
Specifies that a count of unreadable blocks be printed.

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