User's Manual

212 Virtual Disks
• Understanding Hot Spares
• Controller-supported Stripe Sizes
• Rescan to Update Storage Configuration Changes
• Time Delay in Displaying Configuration Changes
NOTE: In addition to this document, review the hardware documentation that is
provided with the controllers. Reviewing the hardware documentation along with
this document may provide a better understanding of the controller limitations.
Virtual Disk Considerations for Controllers
In addition to the considerations described in this section, you should also be
aware of the controller limitations described in Number of Physical Disks per
Virtual Disk for the following controllers:
• PERC 4/SC, 4/DC, 4e/DC, 4/Di, 4e/Si, 4e/Di,
• PERC 5/E, PERC 5/i,
• PERC 6/E, and PERC 6/I
• PERC H310 Adapter, PERC H310 Mini Monolithic, and PERC H310
Mini Blades
• PERC H700, PERC H710 Adapter, PERC H710 Mini Blades, PERC H710
Mini Monolithic
• PERC H800, PERC H810 Adapter
Be aware that the following considerations apply when creating virtual disks:
• Creating virtual disks on controllers —When you create a virtual disk,
you specify which physical disks are to be included in the virtual disk. The
virtual disk you create spans the specified physical disks. Depending on the
size of the virtual disk, the virtual disk may not consume all of the space on
the physical disks. Any leftover space on the physical disks cannot be used
for a second virtual disk unless the physical disks are of equal size. In
addition, when the physical disks are of equal size and you can use the
leftover space for a second virtual disk, this new virtual disk cannot expand
to include any physical disks not included in the original virtual disk.
•
Space allocation when deleting and creating virtual disks on
controllers
—When you delete a virtual disk, you free up or make available
space on the physical disks that were being used by the deleted virtual disk.
If you have created several virtual disks on a
disk group , then deleting