VERITAS Storage Foundation 4.1 Release Notes

New and Enhanced Features
10 VERITAS Storage Foundation Release Notes
With the introduction of the CDS, the format for a disk defaults to CDS rather than to simple,
which was the format in earlier releases. In addition, the simple disk format has been renamed as
hpdisk. For instructions on converting from a CDS format disk to a hpdisk format disk, see the
“Creating and Administering Disk Groups” chapter in the VERITAS Volume Manager
Administrator’s Guide. The section, “Creating a Disk Group,“ includes information on disk
formats and disk group formats.
The ability to import a Cross-platform Data Sharing (CDS) disk group on a platform that is
different from the platform on which the disk group was last imported is controlled by a CDS
license. CDS does not normally require an “Add-on” license, however if you want to import a disk
group from a platform that is different from your own platform, you will need an “Add-on” license.
CDS licenses are included as part of the VERITAS Storage Foundation license.
CDS disk groups have certain physical disk alignment restrictions for subdisk. For more
information on this feature and CDS disk groups in general, see the VERITAS Cross-platform Data
Sharing Administrator’s Guide
A further change in this release is that the default disk type is now auto. This means that disks that
used to show up in the output from vxdisk list as simple will now show up as
auto:hpdisk.
CDS does not support VERITAS Volume Replicator (VVR).
Note The CDS feature is also referred to as Portable Data Containers.
Hitachi Extended Copy Facility
The Hitachi E-Copy facility allows a host server to request data movement from disk to tape or to
another disk without the overhead of server CPU time I/O during the actual movement of data.
Storage Expert
System Administrators sometimes find that gathering and interpreting data about large and
complex configurations can be a difficult task. Consisting of a set of simple commands that collect
and analyze VxVM configuration data, Storage Expert produces a summary report that
recommends configuration improvements.
Detecting and Correcting the Serial Split Brain Condition in a Disk Group
Under certain circumstances a serial split brain condition can occur in a disk group where the actual
serial numbers on disks are different from those listed in the configuration database copies on the
disks. To recover from such a situation, you can use the vxsplitlines command to diagnose
the problem. This command also details other commands that you can use to correct the condition.
For more information, see the “Creating and Administering Disk Groups” chapter of the VERITAS
Volume Manager Administrator’s Guide.