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SSSU Command Reference
30
Command View EVA Storage System Scripting Utility Reference Guide
Use the ADD COPY command to create a copy of the specified virtual disk. A
copy is a new virtual disk family. The ADD COPY command is equivalent to
creating a snapclone within Command View EVA.
copy is a new virtual disk family. The ADD COPY command is equivalent to
creating a snapclone within Command View EVA.
Syntax
ADD COPY <copy_name> VDISK=<vdisk_family>
Switches
The following switches are available with the ADD COPY command.
DISK_GROUP=
This is the name of the disk group where you want to create the virtual disk copy.
The disk group must already exist to use this switch. If not specified, SSSU uses
the same group as the source VDISK.
The disk group must already exist to use this switch. If not specified, SSSU uses
the same group as the source VDISK.
OS_UNIT_ID=
The ID that is presented to the host operating system. If set to zero, no ID is
presented to the host.
presented to the host.
REDUNDANCY=
The amount of data protection set when creating the virtual disk. If not specified,
the default is Vraid0.
the default is Vraid0.
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Vraid0—Provides no data protection. It distributes data among its member
disks into stripes and uses all members to process I/O requests. This method
has no overhead associated with duplication of information and provides the
highest performance.
disks into stripes and uses all members to process I/O requests. This method
has no overhead associated with duplication of information and provides the
highest performance.
■
Vraid1—Provides the highest level of data protection but uses the most
space. It duplicates data written to one disk onto a backup disk. In a multidisk
configuration, Vraid1 mirrors each pair of disks to each other. These disk
pairs can then be striped to create a virtual disk.
space. It duplicates data written to one disk onto a backup disk. In a multidisk
configuration, Vraid1 mirrors each pair of disks to each other. These disk
pairs can then be striped to create a virtual disk.
■
Vraid5—Provides a moderate level of data protection. This method
distributes the parity information among all disk members. If one drive fails,
the failed disk can be recreated after it is replaced.
distributes the parity information among all disk members. If one drive fails,
the failed disk can be recreated after it is replaced.
ADD COPY