BackBox H4.00 User Manual

Product Description
32 BackBox H4.00 User Manual
The volume timestamp check is not available.
The control of access to volume data is different from a PRIMARY Data Store:
In regular PRIMARY Data Stores, the access to a volume is controlled by
the security settings (volume owner and access authorizations) stored
in the domain catalog.
In an alternate domain with RESTRICTED access to a Data Store, the
Read access is the only possible access. This Read access is
controlled by the security settings (owner and authorizations) that
were set in the original domain when the volume was written for a
backup, and copied in the volume image.
In the display of volume details by the BackPak GUI, this is
materialized by an access authorization that can be: “?.N” for
example.
The first character (“?” in the example above) indicates the domain
does not know the authorization and the owner for READ access.
The second character (“.”in the example above) indicates the WRITE
access is disabled in RESTRICTED Data Stores.
The third character (“N” in the example above) is a regular
authorization specification for CONTROL access (controlling the
deletion of volume from the domain catalog).
Notes about access authorizations:
• If the security setting of a volume is modified through the GUI in the
domain holding the PRIMARY view of Data Store, this change will not be
forwarded in other domains holding a RESTRICTED view of the Data Store
• READ and WRITE authorizations can be updated only in PRIMARY Data
Stores.
The user must manually coordinate the sharing of Data Stores between domains.
A Data Store can be configured for simultaneous access by:
a single PRIMARY domain
one or several RESTRICTED domains
In WINDISK Data Stores, simultaneous access in update on the same volume by
several domains cannot give an acceptable result. To preserve data integrity, the
Windows disk files opened for update cannot be opened in exclusive mode in
most file systems providing high-end functionality such as de-duplication.
In TSM API Data Stores, simultaneous access on the same volume by several
domains is also technically possible, even in update mode.
Therefore for any Data Stores, the user must carefully configure to prevent
collisions, beginning by a tape label nomenclature ensuring uniqueness in the
enterprise.
The “Domain access to Data Store” can be modified over the time.