Each linked storage group can access the same snapshot, or each can access a
different snapshot version in either no copy or copy mode. Changes to the linked
volumes do not affect the snapshot data. To roll back a test development environment
to the original snapshot image, perform a relink operation.
Figure 15 SnapVX targetless snapshots
Note
Target volumes must be unmounted before issuing the relink command to ensure that
the host operating system does not cache any filesystem data. If accessing through
VPLEX, ensure that you follow the procedure outlined in the technical note
EMC
VPLEX: LEVERAGING ARRAY BASED AND NATIVE COPY TECHNOLOGIES
, available on
support.emc.com
Once the relink is complete, volumes can be remounted.
Snapshot data is unchanged by the linked targets, so the snapshots can also be used
to restore production data.
Cascading snapshots
Presenting sensitive data to test or development environments often requires that
sensitive data be obfuscated before it is presented to any test or development hosts.
Use cascaded snapshots to support obfuscation, as shown in the following image.
Native local replication with TimeFinder
Cascading snapshots
97
Summary of Contents for VMAX 100K
Page 1: ...EMC VMAX3 Family Product Guide VMAX 100K VMAX 200K VMAX 400K with HYPERMAX OS REVISION 6 5 ...
Page 20: ...Preface 20 Product Guide VMAX 100K VMAX 200K VMAX 400K with HYPERMAX OS ...
Page 46: ...VMAX3 with HYPERMAX OS 46 Product Guide VMAX 100K VMAX 200K VMAX 400K with HYPERMAX OS ...
Page 72: ...Open systems features 72 Product Guide VMAX 100K VMAX 200K VMAX 400K with HYPERMAX OS ...
Page 82: ...Provisioning 82 Product Guide VMAX 100K VMAX 200K VMAX 400K with HYPERMAX OS ...
Page 158: ...Remote replication solutions 158 Product Guide VMAX 100K VMAX 200K VMAX 400K with HYPERMAX OS ...
Page 186: ...Mainframe Error Reporting 186 Product Guide VMAX 100K VMAX 200K VMAX 400K with HYPERMAX OS ...
Page 200: ...Licensing 200 Product Guide VMAX 100K VMAX 200K VMAX 400K with HYPERMAX OS ...