HP XP Array Manager Software - Manual (Page 88)

Description Subfield Field
This field displays only if Smart Pool is selected as the volume type, and
aSmart pool has been selected with Select Pool (see previous Volume Se-
lection section). You can select a specific tier policy for the volume to be
allocated, or select All.
-
Tiering Policy
Setting
Note: This field is not the same field as the Volume Selection field that is
defined when Volume Type is set to Smart Pool.
If your selected storage system is configured with storage tiers, you can
Select a Tier for volume allocation. If your selected storage system was
Any, you can see which storage systems have tiers available using Select
a Tier, and make a selection.
Tier
Volume Selec-
tion
Device Manager automatically selects volumes based on the specified
volume criteria.
For a Basic Volume, Device Manager selects a parity group based on the
volume criteria. The selected parity group changes with changes in criteria.
If desired, click Select Parity Groups to make your selection.
For Thin Provisioning volumes, the system selects a THP pool based on
volume criteria. The selected THP pool changes with the changes in criteria.
New volumes may be created or existing volumes may be used. If desired,
click Select Pool to make your pool selection.
Drive type, speed, RAID level, and parity group or pool can be adjusted
as desired, but the primary purpose of this field relies on the storage system
to decide which resources to use for volume allocation.
Automatic
For Basic Volume and Thin Provisioning volumes, clicking Manual displays
the Selected Volumes dialog box. Click Add Volumes to select basic
volumes or Thin Provisioning volumes.
Manual
Volume criteria can impact volume performance, and changing the drive
type can change the parity group or THP pool.
Drive Type
Volume Criter-
ia
Changing the drive speed (rotational RPM) can change the parity group
or THP pool.
Drive Speed
Changing the RAID level can change the parity group or THP pool.
The RAID levels and parity group configuration can vary depending on
the selected storage system. For example, RAID6 may be supported on
one storage system, but not on another. In addition, RAID6 is displayed
only if RAID6 parity groups have been configured on the selected storage
system.
RAID Level
Changing the volume criteria can change the system selected parity group.
If desired, click Select Parity Groups to make your selection.
Parity Groups
Click Select Pool to select the THP pool from which to allocate volumes.
Changing the volume criteria can change the system selected THP pool.
Pool
Creating Volume Settings and related fields are only displayed when
entered volume criteria requires that a new volume be created. See the
previous definition for Volume Capacity field for an example.
This field displays formatting methods that are available for the volume to
be created, and available for basic volumes on the specified storage
system. For example, you might see options for setting either a quick or a
basic format.
Format Type
Creating
Volume Set-
tings
Managing storage resources in a SAN environment 88