Compaq Infortrend Optimization Mode and Stripe Size, Optimization for Random or Sequential I/O

Optimization Mode and Stripe Size

Each controller optimization mode has preset values for the stripe size of arrays created in different RAID levels. If you want a different value for your array, you may change the controller optimization mode, reset the controller, and then go back to create the array. Once the array is created, stripe size can not be changed.

Using the default value should be sufficient for most applications.

	Opt. for Sequential I/O	Opt. for Random I/O
RAID0	128	32
RAID1	128	32
RAID3	16	4
RAID5	128	32

Optimization for Random or Sequential I/O

Choose “Optimization for Random I/O” or “Optimization for Sequential I/O,” then press [ENTER]. The “Random” or “Sequential” dialog box will appear, depending on the option you have selected. Choose Yes in the dialog box that follows to confirm the setting.

Write-Back/Write-Through Cache Enable/Disable

Choose “Caching Parameters”, then press [ENTER]. Select “Write- Back Cache,” then press [ENTER]. “Enabled” or “Disabled” will

Terminal Operation 7-3