Hitachi G200 - Virtual LUN; Volume Migration; Restrictions

TC pair
status
SI pair status
COPY
(PD)/
COPY
PAIR
COPY
(SP)/
COPY
PSUS
COPY (RS)/COPY,
COPY(RS-R)/RCPY
PSUE
COPY Not
Current
Not
Current
Not
Current
Current Not Current Not
Current
PAIR Not
Current
Not
Current
Not
Current
Current Not Current Not
Current
PSUS
(Delete
pair to
RCU)/
PSUE (pair
suspended
-error)
Not
Current
Current Current Current Current Not
Current
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.
Volume/pair status Used as Volume Migration volume?
P-VOL/S-VOL in COPY status No
P-VOL/S-VOL in PAIR status Yes
P-VOL/S-VOL in PSUS status Yes
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
Sharing TrueCopy volumes
Hitachi TrueCopy® User Guide for Hitachi Virtual Storage Platform Gx00 and Fx00 Models