Restore Operation To A Non-Existent Volume Restores Data To The Root Volume; Suboptimal Space Savings With Deduplication When 16-Gb Performance Acceleration Module Is Installed; If You Use Datafabric Manager Server To Manage Snapmirror Or Snapvault Relationships Between Vfiler Units - IBM N Series Manual

Restore operation to a non-existent volume restores data to the root
volume
If the destination of your restore operation is a non-existent volume, data is
restored to the root volume.
Suboptimal space savings with deduplication when 16-GB Performance
Acceleration Module is installed
When you run a deduplication scan by using the sis start -s command on a
volume with existing data and with the 16-GB Performance Acceleration
Module installed, you obtain suboptimal space savings.
If you use DataFabric Manager server to manage SnapMirror or SnapVault
relationships between vFiler units
For Data ONTAP 7.2 and later, SnapMirror and SnapVault relationships can be
created using vFiler units. However, DataFabric Manager server 3.4 and
earlier releases cannot use vFiler units for managing SnapMirror and
SnapVault relationships.
As a result, you might encounter the following issues:
If the snapvault.access and snapmirror.access options on the source
v
system allow access only to the destination vFiler unit, then the relationship
creation, scheduled backups, on-demand backups, SnapMirror updates, and
SnapMirror resync processes from DataFabric Manager server fail, and you
receive an error message: request denied by source filer, check access
permissions on source
Workaround: To allow access to the destination hosting storage system, set
the snapmirror.access and snapvault.access options on the source system.
If the ndmpd.preferred_interfaces option is not specified on the source
v
hosting system, then the backups from DataFabric Manager server might
not use the correct network interface.
Workaround: Enable the ndmpd.preferred_interfaces option on the source
hosting system.
The backups and SnapMirror updates from DataFabric Manager server fail
v
and you receive the error message source unknown. This occurs when both
of these conditions are met:
– A relationship between two vFiler units is imported into DataFabric
Manager server by auto-discovery or is added manually.
– The destination hosting system is not able to contact the source vFiler IP
address.
Workaround: Ensure that the host name or IP address of the source system
that is used to create relationships can be reached from the destination
hosting system.
Known problems and limitations
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