![Hitachi HUS VM Скачать руководство пользователя страница 258](http://html.mh-extra.com/html/hitachi/hus-vm/hus-vm_user-and-reference-manual_145969258.webp)
¢
Thin Image: Up to 1,024 secondary volumes can be defined for each P
VOL.
¢
Copy-on-Write Snapshot: Up to 64 secondary volumes can be defined
for each P VOL.
For details on Thin Image or Copy-on-Write Snapshot specifications such as
maximum number of mirrored volumes, volumes and operations, please see
the
Hitachi Thin Image User Guide
or
Hitachi Copy-on-Write Snapshot User
Guide
for your storage system.
Pair operations and commands for Copy-on-Write Snapshot and Thin
Image
The following table shows the pair operations and commands that can be
used for Copy-on-Write Snapshot and Thin Image pairs.
Command
Copy-on-Write
Snapshot
Thin Image
Thin Image (cascade
pairs, pairs with the
clone attribute)
paircreate
Yes
Yes*
No
pairsplit
Yes
Yes*
No
pairresync
Yes
Yes*
No
paireventwait
Yes
Yes*
No
pairmon
Yes
Yes*
No
pairvolchk
Yes
Yes*
No
pairdisplay
Yes
Yes*
No
raidscan
Yes
Yes*
No
raidcom
No
Yes
Yes
*The MU numbers that can be used and referenced are from 0 to 63.
Creating a Copy-on-Write Snapshot pair
The CCI command for creating a Thin Image or Copy-on-Write Snapshot pair
is the same as for ShadowImage. However, Thin Image pair can only operate
up to 64 S-VOLs. Therefore, use raidcom command if you want to operate
more than 64 S-VOLs.
The RAID storage system determines whether it is a ShadowImage pair or a
Thin Image/Copy-on-Write Snapshot pair by the attribute of the S-VOL. The
RAID storage system also determines whether it is a Thin Image pair or a
Copy-on-Write Snapshot pair by the type of the pool to be used.
A Thin Image pair is generated in the following two cases:
•
When a V-VOL (OPEN-0V) is specified as an S-VOL.
•
When a pool for Thin Image is specified as the pool type.
6-34
Data replication operations with CCI
Command Control Interface User and Reference Guide
Содержание HUS VM
Страница 10: ...x Command Control Interface User and Reference Guide ...
Страница 18: ...xviii Preface Command Control Interface User and Reference Guide ...
Страница 78: ...2 50 CCI software environment Command Control Interface User and Reference Guide ...
Страница 154: ...4 8 Starting up CCI Command Control Interface User and Reference Guide ...
Страница 191: ...Provisioning operations with CCI 5 37 Command Control Interface User and Reference Guide ...
Страница 277: ... 1 UR 2x2 Data replication operations with CCI 6 53 Command Control Interface User and Reference Guide ...
Страница 280: ...6 56 Data replication operations with CCI Command Control Interface User and Reference Guide ...
Страница 286: ...6 62 Data replication operations with CCI Command Control Interface User and Reference Guide ...
Страница 302: ...7 16 Data protection operations with CCI Command Control Interface User and Reference Guide ...
Страница 324: ...8 22 Examples of using CCI commands Command Control Interface User and Reference Guide ...
Страница 524: ...9 200 Troubleshooting Command Control Interface User and Reference Guide ...
Страница 529: ...Command Control Interface User and Reference Guide ...