HP StorageWorks Storage System Scripting Utility reference (September 2005)

XML element : value

To specify XML output, add the XML switch. For example, the following command:

LS vdisk vd01 XML

provides the following XML output:

<objectname>\Virtual Disks\vd01\ACTIVE</objectname>

NOTE:

The LS commands provi de a ﬂexible format to display system data. The SHOW commands are sti ll

available for script compatibility, but they are deprecated (available, but not supported).

Replica resync with snapclones

Replica resync allows you to revert back to a previous point-in-time (snapclone) if a virtual disk becomes

corrupted. The process involves changing the corrupted virtual disk into a container (using the SET VDISK

CHANG E_INTO _CONTAINER command). This will create an empty container with the same settings

as the original virtual disk. You can then restore the virtual disk data by creating a snapclone of the

previously taken backup snapclone. When the new snapclone completes, it will become an independent

virtual disk with the same settings as the previously corrupted virtual disk. Y our data will be as current as

your most recent backup snapclone.

Creating snapclones

With this release of the utility, a snapclone of a virtual disks can be preallocated using containers.

Containers provide a more efﬁcient way to create snapclones b ecause they can be created before they

are needed for a snapclone. Additionally, reserving the disk space ensures the amount of space needed

for the snapclone will be im m ed iately available when it is needed. Containers are crea ted using the

ADD CONTAINER command.

Cross Vraid

Cross Vraid for snapshot and snapclone allow customers to change the Vraid type when creating

snapshots or snapclones for better disk utilization. Cross Vraid is supported in the following manner:

• Cross Vraid Snapshot (ADD SNAPSHOT) and Snapclones (ADD COPY) within the same disk

group.

• Cross Vraid Snapclones (ADD COPY) across disk groups (including standard and FATA disk

groups)

Refer to ADD COPY and ADD SNAPSHOT for more information.

NOTE:

You cannot create a snapshot of a RAID level that is more available than the parent Vdisk. For example,

you cannot create a snapshot of Vraid1 if the parent Vdisk is Vraid0. The reason is that if the parent

Vdisk is lost, the snapshot will not be more available than the parent Vdisk.

Subsequent snapshots of a virtual d isk must be of the same redundancy level. For example, if you create

a Vraid5 snapshot of a Vraid1 virtual disk, then all other snapshots of the original virtual disk must also

be Vraid5. As an example, you could have seven Vraid5 snapshots of the original Vraid1 virtual disk.

Vraid availability in order, from highest to lowest is: Vraid1, Vraid5, and Vraid0.

The maximum number of snapshots you can cre ate for a single virtual disk is 7.

Getting started