User's Manual

50 USC and USC - LCE
• Select the protocol for the disk pool from the Protocol drop-down menu:
Serial Attached SCSI (SAS) or Serial ATA (SATA) . SAS drives are used
for high performance, and SATA drives provide a more cost-effective
solution.
NOTE: A disk pool is a logical grouping of physical disks on which one or
more virtual disks can be created. The protocol is the type of technology used
to implement RAID.
• Select the media type for the disk pool from the Media Type drop-down
menu:
Hard Disk Drives (HDD) or Solid State Disks (SSD) . HDDs use
traditional rotational magnetic media for data storage, and SSDs
implement flash memory for data storage.
• Select the span length from the
Select Span Length drop-down menu.
The span length value refers to the number of physical disks included in
each span.
NOTE: Span length applies only to RAID 10, RAID 50, and RAID 60. The Select
Span Length drop-down menu is active only if the user has selected RAID-10,
RAID-50, or RAID 60.
• Select the physical disks using the check boxes at the bottom of the screen.
Your physical disk selection must meet the requirements of the RAID level
and span length. To select all of the physical disks, click
Select All .
Click Next after making your selections.
Advanced Wizard Only - Additional Settings
Use the Additional Settings screen to specify cache policies and stripe
element size. You can also assign a hot spare to the virtual disk.
NOTE: The virtual disk size is automatically calculated and displayed in the Size
field. The user cannot change the virtual disk size.
• Select the stripe element size from the Stripe Element Size drop-down
menu. The stripe element size is the amount of disk space a stripe
consumes on each physical disk in the stripe.
NOTE: The Stripe Element Size drop-down menu may contain more options
than initially displayed on the screen. Use the up-arrow and down-arrow keys
to display all options.
LC1_2.book Page 50 Wednesday, November 18, 2009 9:42 AM