HP 3PAR StoreServ 7400 2-node HP 3PAR Command Line Interface Reference (OS 3.1 - Page 155

Do not ask for confirmation before creating a volume with retention time (-retain). -retain [d|D|h|H] Specifies the amount of time, relative to the current time, that the volume will be retained. is a positive integer value and in the range of 1 - 43,800 hours (1,825 days). Time can be optionally specified in days or hours providing either d or D for day and h or H for hours following the entered time value. NOTE: If the volume is not in any domain, then its retention time cannot exceed the value of the system's VVRetentionTimeMax . The default value for the system's VVRetentionTimeMax is 14 days. If the volume belongs to a domain, then its retention time cannot exceed the value of the domain's VVRetentionTimeMax , if set. The retention time cannot be removed or reduced once it is set. If the volume has its retention time set, it cannot be removed within its retention time. If both expiration time and retention time are specified, then the retention time cannot be longer than the expiration time. This option requires the HP 3PAR Virtual Lock License. Contact your local HP 3PAR Authorized Service Provider for more information. -spt Defines the VV 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 Defines the VV 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. -pol [,...] Specifies the VV policies. stale_ss Specifies that invalid snapshot volumes are permitted. Failure to update snapshot data does not affect the write to the base volume, but the snapshot is considered invalid. no_stale_ss Specifies that invalid snapshot volumes are not permitted. 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 VV 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 portion of the data page. This ensures that the host cannot read data from deleted volumes or snapshot. The allocation page size is 16 KB. This is the default policy setting. no_tp_bzero Specifies that the zero-fill operation is bypassed on the allocation of partially written data pages. zero_detect This policy enables the HP 3PAR Storage System to scan for zeros in the incoming write data. This feature when used during physical copy to a TPVV will avoid allocating space for blocks containing zero. This feature when used with a Thin Persistence license will reclaim allocated space when zero blocks are written to the TPVV. This policy is only applicable for the base TPVV. createvv 155