Users Guide
• For SAS/iR and PERC H200 family of controllers, you can assign only two global hot spares.
• If the status of the virtual disk is displayed as Degraded or Failed because of the hot spare protection policy violation, then assign the
required number of hot spares (as dened in the protection policies) for the status to be displayed as normal.
• Hot Spare Protection Policy is not applicable to PERC S100, S110, S130, and S300 controllers.
Considerations For Enclosure Anity
Enclosure anity settings for a global/dedicated hot spare are not automatically set when you upgrade to version 6.1. Enclosure anity
settings for a global/dedicated hot spare are not automatically set when you import a foreign virtual disk.
Dedicated Hot Spare Considerations
The following considerations apply to dedicated hot spares:
• Considerations for RAID 10, RAID 50, and RAID 60 — If you have created a RAID 10 or RAID 50 virtual disk that does not fully consume
its member physical disks, then you cannot assign a dedicated hot spare to the RAID 10 or RAID 50 virtual disk. Storage Management
does not allow you to create RAID 10 and RAID 50 virtual disks from partial physical disks. You therefore do not encounter this situation
if you use Storage Management to create your virtual disks. If, however, the RAID 10 or 50 virtual disk was created using another
application and if it does contain partial physical disks, then you can assign a dedicated hot spare to the virtual disk.
NOTE: For PERC H700 and PERC H800 controllers, you can assign a dedicated hot spare to RAID 10, RAID 50, and RAID
60.
• Considerations for Multiple Dedicated Hot Spares — From Storage Management version 3.1 onwards, you can assign more than one
dedicated hot spare to a virtual disk.
Considerations For Hot Spares On PERC S100 And
PERC S300 Controllers
For the PERC S100 and PERC S300 controllers, a hot spare is assigned to a virtual disk. When a physical disk fails, only the portion of the
physical disk containing the virtual disk is rebuilt onto the hot spare. Data or space on the physical disk is not included in the virtual disk are
not rebuilt.
On the PERC S100 and PERC S300 controllers, individual physical disks may be included in more than one virtual disk. Assigning a portion
of a physical disk to a virtual disk does not preclude the remaining portion of the physical disk from being used by other virtual disks. Only
the virtual disks to which the hot spare is assigned are rebuilt. When using Storage Management, a disk that is assigned as a hot spare on a
PERC S100 and PERC S300 controller cannot be used as a member of a virtual disk.
Size Requirements For Global Hot Spares On S100 And S300
Controllers
When assigning a physical disk as a global hot spare on a PERC S100 and PERC S300 controller, the physical disk should be equal to or
greater than the largest physical disk on the controller.
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Protecting Your Virtual Disk With A Hot Spare