Filter
Top Products
Hitachi Command Control Interface (CCI) User and Reference Guide 39
Primary
volume
S
Secondary
volume
S
Read/Write
Co
py
on write
Read/Write
Restore copy
Table 2.8 SnapShot Pairing Status
Status Pairing Status Primary Secondary
SMPL Unpaired (SnapShot) volume R/W enabled R/W disable (Note 1)
PAIR (PFUL) The snapshot available state allocated the resource. R/W enabled R/W disable
COPY The preparing state allocates the resource for the snapshot. R/W enabled R/W disable
RCPY The copying state from snapshot to the primary volume by
using restore option.
R/W disable R/W disable
PSUS (PFUS) The differences of the updated data of the primary and
secondary volume are controlled with copying on write.
R/W enabled R/W enabled
PSUE (Error) “PSUS” status owing to an internal failure. The differences of
the updated data for the snapshot volume are not controlled.
R/W enabled
(Note 2)
R/W disable
Note 1: V-VOL unmapped to the SVOL of SnapShot will reply to SCSI Inquiry, but Reading
and/or Writing will not be allowed.
Note 2: Reading and writing are enabled, as long as no failure occurs in the primary volume.