Filter
Top Products
SSSU Command Reference
41Command View EVA Storage System Scripting Utility Reference Guide
■ 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.
■ 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.
■ 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.
VDISK=
The source virtual disk for this snapshot.
WORLD_WIDE_LUN_NAME=
Sets the World Wide LUN Name.
Required switch
The following switch is required with the ADD SNAPSHOT command:
■ VDISK=
Examples
ADD SNAPSHOT payroll_backup VDISK="\Virtual
Disks\payroll\ACTIVE" ALLOCATION_POLICY=DEMAND
ADD SNAPSHOT wed_nite_biz VDISK="\Virtual
Disks\daily_biz\ACTIVE" ALLOCATION_POLICY=FULLY
The first example creates a snapshot payroll_backup from the ACTIVE partition
of Vdisk family payroll that uses capacity only as needed.
The second example creates a snapshot wed_night_biz from the ACTIVE partition
of the family daily_biz while reserving all capacity necessary to create the
snapshot.
Note: To delete snapshots created by ADD SNAPSHOT, use the DELETE VDISK
command.