HP StorageWorks 1200r All-in-One Storage System - Manual (Page 78)

Physical storage
Notes Description Item
A hot spare is assigned at the array
level. A LUN that does not require
a hot spare may be assigned one
anyway if another LUN on the same
array requires a hot spare. * A hot spare is a hard drive reserved as a spare
for storage space configured as RAID 1, 1+0,
5, or 6. A hot spare automatically replaces a
hard drive when it fails. When the failed hard
drive is replaced, its replacement becomes the
new hot spare. Hot spare required
For better performance, increase
the minimum number of physical
disks The minimum number of physical disks that the
allocated storage will be spread across. Storage
may be provisioned across more disks, but this
setting determines the minimum number of disks
reserved for the allocated storage. Minimum number of
physical disks
The storage area can be assigned to an existing
logical disk, or it can be assigned a new disk,
which is created upon completion of the
scheduled tasks for the storage wizard. Assigned logical disk
ASM provides the following values:
8 KB, 16 KB, 32KB, 64 KB, 128
KB, and 256 KB.* The number of bytes or kilobytes of data in each
RAID stripe (block of data). The RAID stripe size
selected affects performance. For the best
performance, select the stripe size closest to the
size of the files being saved. RAID stripe size
This value may be modified in order
to match the change rate of the
data in the storage area. Amount of storage space (as a percentage of
the volume) that is reserved for storing snapshots
of the storage area. Snapshot storage
space (percentage of
size)
Other storage settings
The percent full warning threshold
is set by default to 80%. Percent full
warning threshold values are
ASM-specific; percent full warning
threshold values selected in the
Quota Management MMC snap-in
are not adopted by ASM. All other
Quota Management MMC snap-in
settings are adopted by ASM. See
Setting a percent full warning
threshold
on page 80.
The percent full value that when reached
changes the storage status to Warning and
issues a warning alert. The warning indicates
that storage use has surpassed the percentage
full value. For example, if you enter 75%, you
see a warning (yellow asterisk) in the content
pane when storage is at 75 percent full. Percent full warning
threshold
This item is available for shared
folders and local storage
component. See
Enforcing an
allocated storage limit for shared
folders and local storage
applications
on page 81.
Sets an enforced quota for the amount of storage
available to a shared folder or local storage
application. When the storage space allocated
to a component is full, no further data can be
saved to this component. Enforce allocated limit
(quota)
This setting does not apply to
shared folders. Indicates whether the storage area is hosted on
a mount point or drive letter. Application server
volume mount type
*After you have allocated and configured storage for an application component, user-defined application,
or shared folder using a wizard, you can change the allocated space size, change the percent full warning
threshold, and change the enforced allocated limit (shared folders and local storage applications). However,
you cannot change the RAID level, RAID stripe size, Hot Spares, or Physical Disk Type.
Hosting storage for applications and shared folders 78