Sun Microsystems StorEdge 3000 Series, Installation, Operation And Service Manual

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Chapter 5 First-Time Configuration 5-27
7. Confirm your selection by choosing Yes and pressing Return.
A confirmation message is displayed:
8. Choose Yes to Reset the controller.
The configuration change takes effect only after the controller is reset.
5.5.6 Selecting Sequential or Random Optimization
Before creating or modifying logical drives, select the optimization mode for all
logical drives you create. The optimization mode determines the block size used
when writing data to the drives in an array.
■
Sequential I/O uses large blocks of data:
■
128 Kbyte for RAID 0, 1, and 5 logical drives
■
16 Kbyte for RAID 3 logical drives)
■
Random I/O uses small blocks of data:
■
32 Kbyte) for RAID 0, 1, and 5 logical drives
■
4 Kbyte for RAID 3 logical drives
Note – Your array is preconfigured for Sequential Optimization. If Random
Optimization is most appropriate for your use, you will need to delete all of the
preconfigured logical drives, change the optimization mode, and then create new
logical drives.
The type of application the array is working with determines whether random or
sequential I/O should be applied. Video and imaging application’s I/O size can be
128, 256, 512 Kbyte, or up to 1 Mbyte, so the application reads and writes data to and
NOTICE: Change made to this setting will NOT take effect until the
controller is RESET. Prior to resetting the controller, operation
may not proceed normally. Do you want to reset the controller now?