HP StorageWorks All-in-One SB600c Storage Blade - Manual (Page 28)

Item Description Notes
Percent Full Warning
Threshold
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.
The percent full warning threshold
is set by default to 80%.
nl 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. However, all
other Quota Management MMC
snap-in settings are adopted by
ASM. See Setting a percent full
warning threshold on page 30.
Exclusive Storage
Data is stored on hard drives dedicated
to storing only the data for the application
component, user-defined application, or
shared folder you are configuring. The number
of hard drives dedicated depends on the
allocated space size and other advanced
storage configuration settings selected for the
item you are configuring.
nl Exclusive storage is required by some
applications for the storage of specific types
of data.
For Exchange and SQL Server,
ASM default values specify
exclusive storage for log files,
which according to storage best
practices, should be isolated from
other application storage areas.*
Enforce Allocated
Limit (Quota)
Sets an enforced quota for the amount of
storage available to a shared folder. When
the storage space allocated to a shared folder
is full, no further data can be saved to the
shared folder.
This item is available for shared
folders only. See Enforcing an
allocated storage limit for shared
folders on page 30.
Hot Spare Required
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.
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.
Physical Disk Type Type of physical disk to add for the hot spare
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.
*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 only). However, you cannot change
the RAID level, RAID stripe size, Hot Spares, or Exclusive Storage settings. This is due to the nature of
how hard drives work.
Customizing RAID levels
Before you customize the default RAID level setting, review Table 7 to see how the different RAID levels
affect performance, capacity, and data protection level.
Unless you customize the advanced configuration settings, the wizard configures the storage space with
the default values shown on the Advanced window:
• For Exchange and SQL Server, the wizard suggests default settings based on HP storage best
practices and specific recommendations for Exchange storage group and SQL Server database
components. You should generally accept these defaults.
28 Hosting storage for applications and shared folders