NOTE:
You cannot perform the following operations on a pool while the pool volume capacity
is in the process of shrinking. Wait until shrinking completes or stop the shrinking process.
•
Expand Pool
•
Shrink Pools
•
Edit Pools
•
Restore Pools
If you delete the pool-VOL with the pool's system area, the used capacity and the management
area will move to other pool volumes. If you delete the pool-VOL with system area, a different
system area pool-VOL will be assigned automatically according to the priority shown in the following
table. A pool must include one or more pool-VOLs.
Data drive type
Priority
SAS7.2K
1
SAS10K
2
SAS15K
3
SSD
4
External volume
5
If multiple pool-VOLs of the same data drive type exist, the priority of each is determined by internal
index of the storage system.
If pool capacity is decreased soon after creating a pool or adding a pool-VOL, processing may
take a while to complete.
Notes on using Thin Provisioning
You cannot delete a pool-VOL under these conditions.
•
If the pool-VOL is deleted, the used capacity of the pool-VOL exceeds the pool threshold.
•
If the pool-VOL is deleted, the subscription rate of the total V-VOL capacity including the control
information exceeds the subscription limit. For details about the formula used to calculate the
required pages for one THP V-VOL including the control information, see
•
If the pool-VOL with system area is deleted, more than 4.2 GB of free space is necessary in
the pool.
Notes on using Smart Tiers
•
You cannot delete a pool-VOL under these conditions.
If the pool-VOL is deleted, the used capacity of the pool-VOL exceeds the pool threshold.
◦
◦
If the pool-VOL is deleted, the subscription rate of the total V-VOL capacity including the
control information exceeds the subscription limit. For details about the formula used to
calculate the required pages for one THP V-VOL including the control information, see
“Pool subscription limit” (page 139)
◦
If the pool-VOL with system area is deleted, more than 4.2 GB of free space is necessary
in the pool.
•
When the pool-VOL is deleted, the pages contained in the deleted pool-VOL transfer to another
pool-VOL in the same tier. If the used capacity in the tier exceeds
Rate of Free Space Newly
Allocated to
, the overflowing pages transfer to another tier.
Managing pools and THP V-VOLs
149
Содержание XP7
Страница 229: ...Select LDEVs window Available LDEVs table Description Item LDEV identifiers LDEV ID Create Resource Groups wizard 229 ...
Страница 303: ...Pools Volume tabs Pools Volume tabs 303 ...
Страница 378: ...Add LUN Paths wizard Select LDEVs window Available LDEVs table 378 LUN Manager GUI reference ...
Страница 381: ...Select Host Groups window Available Host Groups table Add LUN Paths wizard 381 ...