HP X1800sb G2 Network Storage Blade User Manual
Page 19
Table 5 Advanced Storage Properties items
Physical storage
Notes
Description
Item
You are prevented from setting the size
below 15 MB.
After the allocated storage space is full
(100 percent used), no further data can
be stored to the space until you
increase the size using the Allocate
Space Wizard. The only exception is
for shared folders and local storage
applications without an enforced
allocated limit. If there is unused
storage space on the logical disk where
a component without an enforced
allocated limit resides, data can be
written to the component until the
logical disk is full.
The amount of storage that ASM allocates to the
application component, user-defined application, or
shared folder you are configuring.
Size
You are able to choose SAS, (Serial
Attached SCSI) SATA, (Serial Advanced
Technology Attachment) or SCSI (Small
Computer System Interface) for a
physical disk type, depending on your
hardware.*
Type of physical disk to add for the hot spare.
Physical disk type
For more information about RAID levels,
see
Hard drive formatting that provides different levels
of performance, capacity, and data protection.
RAID level
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
Allocating space for components
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