Understanding RAID volumes

The HP Storage Manager supports the following RAID volume types:

• Simple Volume - a single disk drive or segment; not redundant.
  
  

   HostRAID controllers support Simple volumes only.

• Spanned Volume - two or more disk drives or segments with the same or different capacity, connected end-to-end. A spanned volume offers no redundancy or performance advantage over a single drive.
  
  
• RAID Volume - two or more logical devices with the same RAID level, connected end-to-end. The logical devices may have the same or different capacity and are not striped together; they may be redundant, depending on the RAID level.
  
  Notes:
  1. You must create the individual logical drives before you create a RAID Volume. Use the Configuration wizard to create the logical drives; then, run the Configuration wizard again to create the RAID Volume.
  
  
  2. When you create a RAID Volume, the HP Storage Manager replaces the individual logical devices with a single RAID Volume icon in the Logical devices view; then, it reports the logical devices as deleted in the event viewer. The event message is normal and does not indicate a loss of data.

More information

• Understanding RAID technology
• Understanding stripe size
• Selecting a RAID level
• RAID level-0
• RAID level-1
• RAID level-5
• RAID level-6
• RAID level-x0

x-1106-HSM-00-12-EN