HP StorageWorks 1500cs Modular Smart Array - Manual (Page 17)

Configuring a new controller 17
7. Click Finish to confirm the configuration. The drives are now configured as unused space on the
new array.
To create more arrays on the same controller, repeat the previous steps.
Creating a logical drive
1. Click Create a logical drive, and then click Begin.
2. Select an array that has unused space, and then click Next. (The array must have unused space for
logical drive creation to be possible.)
The screen displays a list of the fault-tolerance levels that are possible for this configuration. For
example, RAID 5 is not listed if the array has only two physical drives.
3. Select a fault-tolerance level, and then click Next.
4. Select a stripe size, and then click Next.
The default stripe size gives optimum performance in a mixed read/write environment. If your system
is used in a different environment, refer to the following table to determine what stripe size to set.
Type of server application Suggested stripe size change
Mixed read/write Accept the default value.
Mainly sequential read (such as
audio/video applications) Use a larger stripe size.
Mainly write (such as image
manipulation applications) Use a smaller stripe size for RAID 5 or
RAID 6 (ADG).
Use a larger stripe size for RAID 0 or
RAID 1+0.
*Not all controllers support RAID 6 (ADG).
The next screen gives you the option to enable MaxBoot. When MaxBoot is enabled, 63 sectors are
used per track instead of 32. This increased number of sectors allows a larger boot partition for
operating systems such as Microsoft® Windows NT® 4.0 that use cylinders, heads, and sectors of a
physical drive to determine the drive size. It also enables you to create a larger logical drive or
increase the logical drive size (extend it) at a later time.
Logical drive performance is likely to decrease with MaxBoot enabled.
5. Decide whether to use MaxBoot, and then click Next.
The next screen enables you to set the size of the logical drive. The default size shown is the largest
possible logical drive size for the RAID level that you chose and the set of physical drives that is
being used. Reducing the size of the logical drive liberates drive space, which you can use to build
additional logical drives on the same array.