Type
Volume that can
be used as P-VOL
Volume that can
be used as S-VOL
Cascade
capability
Description
the snapshot
attribute, use a
DP-VOL as the S-
VOL.
The logical
volume of the P-
VOL contains DP-
VOLs (V-VOL of
which provisioning
type is Dynamic
Provisioning).
Pairs with the
clone attribute
Logical volume
(LDEV)
DP-VOL Yes
Pairs to be cloned.
The logical
volume of the P-
VOL contains DP-
VOLs (V-VOL of
which provisioning
type is Dynamic
Provisioning).
Volume components
To create Thin Image pairs, the following volumes are required.
Volume type Volumes that can be used Description
Primary Logical volume (LDEV) Logical volume of a P-VOL
contains DP-VOLs (V-VOLs of
which provisioning type is
Dynamic Provisioning).
Secondary Thin Image V-VOL (V-VOL of
which provisioning type is
Snapshot)
Use this volume to create
snapshot pairs. Cannot be used
for cascaded or cloned pairs.
This volume is required to
create a pair with the S-VOL
specified.
DP-VOL
Use this volume to create
cascaded or cloned pairs.
This volume is required to
create a pair with the S-VOL
specified. Cloned pairs must be
created with the S-VOL
specified.
Pool Logical volume (LDEV) Volumes that configure a pool
which stores snapshot data.
Differential data of a P-VOL is
stored in a pool volume as
snapshot data.
Overview of Thin Image 19
Hitachi Thin Image User Guide for Hitachi Virtual Storage Platform G Series and F Series
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