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SSSU Command Reference
46
Command View EVA Storage System Scripting Utility Reference Guide
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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.
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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.
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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.
SIZE=
This is a required switch. Size of the storage to be created. You can specify size in
whole gigabytes only, and fractions are not allowed (1 GB – 2000 GB, limited by
the actual amount of space available within the disk group).
whole gigabytes only, and fractions are not allowed (1 GB – 2000 GB, limited by
the actual amount of space available within the disk group).
WORLD_WIDE_LUN_NAME=
Sets the World Wide LUN Name.
Note:
This switch is commonly used to allow a host to point to a new version of the
virtual disk by giving the new virtual disk the same WWN as the old virtual disk.
WRITE_PROTECT
Does not allow writing to the virtual disk for all presented LUNs/host.
NOWRITE_PROTECT
Allows writing to the virtual disk for all presented LUNs/host.
WAIT_FOR_COMPLETION
Default. Waits until the command’s operation completes before displaying the
next SSSU prompt (and returning control) or before running another script line.
For large (greater than 1 TB) virtual disks, using this option can result in a long
period before the prompt displays.
next SSSU prompt (and returning control) or before running another script line.
For large (greater than 1 TB) virtual disks, using this option can result in a long
period before the prompt displays.