Seagate ST3400071FC Betriebsanweisung PDF herunterladen (Seite 183)

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InForm OS Version 2.2.4 Command Line Interface Reference

–al <percent>

Specifies the TPVV’s allocation limit. The snapshot data space of the virtual volume is

prevented from growing beyond the specified percentage of the virtual volume size. Once

the limit is reached, new writes to the TPVV fail.

-spt <sectors_per_track>

Allows you to define the virtual volume geometry sectors_per_track value that is

reported to the hosts through the SCSI mode pages. The valid range is from 4 to 8192 and

the default value is 304.

-hpc <heads_per_cylinder>

Allows you to define the virtual volume geometry heads_per_cylinder value that is

reported to the hosts though the SCSI mode pages. The valid range is from 1 to 1024 and

the default value is 8.

Specifies the policy that the created volume follows. If an argument is not specified, the

option defaults to

stale_ss.

stale_ss

Specifies that invalid snapshot volumes are permitted. Failure to update snapshot

data does not affect the write to the base volume. However, the snapshot is

considered invalid.

no_stale_ss

Specifies that invalid snapshot volumes are not permitted. A failure to update a

snapshot is considered a failure to write to the base volume.

one_host

This constrains the export of a volume to one host or one host cluster (when cluster

names can be used as a host name).

no_one_host

This policy should only be used when exporting a virtual volume to multiple hosts

for use by a cluster-aware application, or when “port presents” VLUNs are used. This

is the default policy setting.

tp_bzero

Specifies that if a host write results in the allocation of a new data page that is only

partially filled by the host write, then a zero-fill is performed on the unwritten

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