Virtual Lun; Volume Migration; Restrictions - Hitachi G200 User Manual

TC pair
status
COPY
PAIR
PSUS
(Delete
pair to
RCU)/
PSUE (pair
suspended
-error)

Virtual LUN

Virtual LUN volumes can be assigned to TC pairs, with the following

restrictions:

• The S-VOL must have the same capacity as the P-VOL.
• When performing Virtual LUN operations on an existing TC P-VOL or S-
VOL, you must release the pair first to return the volume to SMPL status.
For more information, see the Provisioning Guide for Hitachi Virtual Storage
Platform Gx00 and Fx00 Models.

Volume Migration

The following table shows when TC volumes may be used as Volume
Migration volumes.
P-VOL/S-VOL in COPY status
P-VOL/S-VOL in PAIR status
P-VOL/S-VOL in PSUS status
Restrictions
The following restrictions must be followed when a TC volume in PAIR status
is used as a Volume Migration volume:
• Set I/O rates less than 50 IOPS while migrating volumes; if more than 50
IOPS, volumes may not be migrated.
4-12
Hitachi TrueCopy® User Guide for Hitachi Virtual Storage Platform Gx00 and Fx00 Models
COPY
(PD)/ PAIR
COPY
Not Not
Current Current
Not Not
Current Current
Not Current
Current
Volume/pair status
Sharing TrueCopy volumes
SI pair status
COPY
COPY (RS)/COPY,
(SP)/ PSUS
COPY(RS-R)/RCPY
COPY
Not Current Not Current
Current
Not Current Not Current
Current
Current Current Current
Used as Volume Migration volume?
No
Yes
Yes
PSUE
Not
Current
Not
Current
Not
Current