Users Guide

The Create Virtual Disk Advanced Wizard (Step 3 of 3) - <Controller Name> page displays a check box
next to each physical disk that is suitable as a dedicated hot spare. Select a Physical Disk check box if you
want to assign a dedicated hot spare
The Physical Disk check box is not available if the controller does not have a physical disk that is a
suitable hot spare for the virtual disk you are creating. For example, the available physical disks may be
too small to protect the virtual disk. If the Physical Disk check box is not available, you may need to
specify a smaller virtual disk, use a different RAID level, or change the disk selection.
NOTE: If you are creating an encrypted virtual disk, then encrypted physical disks are listed as
candidates for hot spare.
Related Concepts
Calculation For Maximum Virtual Disk Size
Monitoring Disk Reliability On RAID Controllers
Channel Redundancy
What is RAID?
RAID Controller Read, Write, Cache, And Disk Cache Policy
Write Policy
Span Edit
In the edit mode, you cannot alter the number of physical disks per span. If there are enough available
physical disks, you can reduce or increase the number of spans. You can also alter the contents of a span
by removing the span and selecting a new physical disk to comprise that span.
To successfully create a virtual disk, a minimum of two spans must exist always.
NOTE: If you select Span Edit, Intelligent Mirroring that is already been applied becomes invalid.
Virtual Disk Task: Reconfigure (Step 1 of 3)
Does my controller support this feature? See Supported Features.
The Reconfigure task enables you to change the virtual disk configuration. Using this task, you can
change the RAID level and increase the virtual disk size by adding physical disks. On some controllers,
you can also remove physical disks.
Before continuing with the virtual disk reconfiguration, you should be familiar with the information in
Starting And Target RAID Levels For Virtual Disk Reconfiguration And Capacity Expansion and Choosing
RAID Levels And Concatenation.
NOTE: You cannot reconfigure a virtual disk on a controller that is operating in cluster mode.
NOTE: You can create no more than 64 virtual disks on a controller. After you have reached this
limit, you can no longer reconfigure any of the virtual disks on the controller. But, for IR and PERC
H200 controllers, you can create only two virtual disks.
NOTE: On systems running the Linux operating system, if you reconfigure the same controller on
which the operating system resides, you may experience extremely slow system performance until
the reconfiguration is complete.
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