HP XP Array Manager Software - Manual (Page 62)

Description Subfield Field
If Pool Type with THP and Smart options is displayed, the selected
storage system supports both THP and Smart. If Pool Type options
are not displayed, it means the selected storage system supports
THP only.
Select THP to create a pool using one or more parity groups.
Select Smart to create a pool with tiers, using one or more parity
groups. Note that Smart options will be displayed at the bottom
of the dialog box when Smart is selected.
THP or Smart Pool Type
Pool Summary information is updated as parity groups are selected
and advanced options are set for items like thresholds.
For THP, Pool Configuration displays the physical attributes of the
pool, including drive type, drive speed, form factor, RAID level,
and parity group capacity.
For Smart, Tier Configuration displays the attributes of one or more
tiers, including tier no (1-3), volume location (internal/external),
drive type, drive speed, external LDEV tier rank, No. of parity
groups, and parity group capacity.
- Pool Summary
The use of this panel changes depending on your pool type.
For THP, use Add Parity Groups to add one or more parity groups
to a pool. When finished, Close the window and review the
selected parity groups. If necessary, use Release Parity Groups to
remove selected parity groups from the list. You may select Allow
to mix different drive types/speeds, RAID levels, or volume
locations to create pools using parity groups with different
attributes.
For Smart, click the + tab to display eligible drive types and
speeds. Select a drive type (for example SAS, 15000 RPM) and
click Select. This will update Tier Configuration with drive
information, and create a Tier 1 tab. On the Tier 1 tab, use Add
Parity Groups to add one or more parity groups to the tier. Click
the + tab again to create Tier 2, and again to create Tier 3.
Note the following important items regarding Smart configuration:
• The web client will automatically arrange your tiers from
highest performance (Tier 1) to lowest performance (Tier 3),
regardless of the order used while defining your tiers. For ex-
ample, if SAS 15000 is your final tier definition, but is the
highest performance tier, SAS 15000 will be displayed as
Tier 1, not Tier 3. Essentially, the web client re-arranges and
re-orders your tier definitions so that they are correctly ordered
in terms of performance levels. This provides easy and flexible
tier creation for the administrator.
• When all 3 tiers are defined, the + tab is no longer displayed
since 3 tiers is the limit. If you delete a tier tab using the close
box (X), the + tab is again displayed, allowing for a new tier
definition. With only 1 or 2 tiers defined, the + tab is visible,
and you can easily delete and create tier definitions as re-
quired.
-
Additional Par-
ity Groups
You can change the default pool id number. Use Show Pool ID
Usage to display pool id number and names in use.
Pool ID
>> Advanced
Options
Managing storage resources in a SAN environment 62