Figure 16 SnapVX cascaded snapshots
If no change to the data is required before presenting it to the test or development
environments, there is no need to create a cascaded relationship.
Accessing point-in-time copies
To access a point-in time-copy, you must create a link from the snapshot data to a
host mapped target device. The links may be created in Copy mode for a permanent
copy on the target device, or in NoCopy mode for temporary use. Copy mode links
create full-volume, full-copy clones of the data by copying it to the target device’s
Storage Resource Pool. NoCopy mode links are space-saving snapshots that only
consume space for the changed data that is stored in the source device’s Storage
Resource Pool.
HYPERMAX OS supports up to 1,024 linked targets per source device.
Note
When a target is first linked, all of the tracks are undefined. This means that the target
does not know where in the Storage Resource Pool the track is located, and host
access to the target must be derived from the SnapVX metadata. A background
process eventually defines the tracks and updates the thin device to point directly to
the track location in the source device’s Storage Resource Pool.
Mainframe SnapVX and zDP
Data Protector for z Systems (zDP) is a mainframe software solution that is deployed
on top of SnapVX on VMAX3 arrays. zDP delivers the capability to recover from
logical data corruption with minimal data loss. zDP achieves this by providing multiple,
frequent, consistent point-in-time copies of data in an automated fashion from which
an application level recovery can be conducted, or the environment restored to a point
prior to the logical corruption.
By providing easy access to multiple different point-in-time copies of data (with a
granularity of minutes), precise remediation of logical data corruption can be
performed using application-based recovery procedure. zDP results in minimal data
loss compared to the previous method of restoring data from daily or weekly backups.
Native local replication with TimeFinder
98
Product Guide
VMAX 100K, VMAX 200K, VMAX 400K with HYPERMAX OS
Содержание VMAX 100K
Страница 1: ...EMC VMAX3 Family Product Guide VMAX 100K VMAX 200K VMAX 400K with HYPERMAX OS REVISION 6 5 ...
Страница 20: ...Preface 20 Product Guide VMAX 100K VMAX 200K VMAX 400K with HYPERMAX OS ...
Страница 46: ...VMAX3 with HYPERMAX OS 46 Product Guide VMAX 100K VMAX 200K VMAX 400K with HYPERMAX OS ...
Страница 72: ...Open systems features 72 Product Guide VMAX 100K VMAX 200K VMAX 400K with HYPERMAX OS ...
Страница 82: ...Provisioning 82 Product Guide VMAX 100K VMAX 200K VMAX 400K with HYPERMAX OS ...
Страница 100: ...Native local replication with TimeFinder 100 Product Guide VMAX 100K VMAX 200K VMAX 400K with HYPERMAX OS ...
Страница 158: ...Remote replication solutions 158 Product Guide VMAX 100K VMAX 200K VMAX 400K with HYPERMAX OS ...
Страница 186: ...Mainframe Error Reporting 186 Product Guide VMAX 100K VMAX 200K VMAX 400K with HYPERMAX OS ...
Страница 200: ...Licensing 200 Product Guide VMAX 100K VMAX 200K VMAX 400K with HYPERMAX OS ...