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Dell PowerVault ME5 Series Storage System CLI Reference Guide

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volumes

This basetype is used by show volumes and show volume-groups.

Table 1. volumes properties
Name Type Description
durable-id string Volume ID in the format V <#> , where <#> starts at 1 and increments for each new volume to uniquely identify it. The value is generated from available data in the current CLI session and may change after a Management Controller restart.
url string For internal use only.
virtual-disk-name string The name of the pool that contains the volume.
storage-pool-name string The name of the pool that contains the volume.
storage-pools-url string Pool URL.
volume-name string Volume name.
size string Volume capacity, formatted to use the current base, precision, and units.
size-numeric uint64 Unformatted size value in blocks.
total-size string The total size of the volume.
total-size-numeric uint64 Unformatted total-size value in blocks.
allocated-size string The amount of space currently allocated to a virtual volume, or the total size of a linear volume.
allocated-size-numeric uint64 Unformatted allocated-size value in blocks.
storage-type string
  • Linear: The volume is in a linear pool.
  • Virtual: The volume is in a virtual pool.
storage-type-numeric uint32 Numeric equivalents for storage-type values.
  • 0: Linear
  • 1: Virtual
preferred-owner string Controller that owns the volume during normal operation.
  • A: Controller A.
  • B: Controller B.
preferred-owner-numeric uint32 Numeric equivalents for preferred-owner values.
  • 0: B
  • 1: A
owner string Either the preferred owner during normal operation or the partner controller when the preferred owner is offline.
  • A: Controller A.
  • B: Controller B.
owner-numeric uint32 Numeric equivalents for owner values.
  • 0: B
  • 1: A
serial-number string Volume serial number.
write-policy string
  • write-back: Write-back caching does not wait for data to be completely written to disk before signaling the host that the write is complete. This is the preferred setting for a fault-tolerant environment because it improves the performance of write operations and throughput.
  • write-through: Write-through caching significantly impacts performance by waiting for data to be completely written to disk before signaling the host that the write is complete. Use this setting only when operating in an environment with low or no fault tolerance.
write-policy- numeric uint32 Numeric equivalents for write-policy values.
  • 0: write-through
  • 1: write-back
cache-optimization string
  • standard: This controller cache mode of operation is optimized for sequential and random I/O and is the optimization of choice for most workloads. In this mode, the cache is kept coherent with the partner controller. This mode gives you high performance and high redundancy.
  • atomic-write: This mode guarantees that if a failure (such as I/O being aborted or a controller failure) interrupts a data transfer between a host and the storage system, controller cache will contain either all the old data or all the new data, not a mix of old and new data. This option has a slight performance cost because it maintains a secondary copy of data in cache so that if a data transfer is not completed, the old cache data can be restored.
cache-optimization-numeric uint32 Numeric equivalents for cache-optimization values.
  • 0: standard
  • 3: atomic-write
read-ahead-size string The read-ahead cache setting of the volume.
  • Disabled: Read-ahead is disabled.
  • Adaptive: Adaptive read-ahead is enabled, which allows the controller to dynamically calculate the optimum read-ahead size for the current workload.
  • Stripe: Read-ahead is set to one stripe. The controllers treat NRAID and RAID-1 disk groups internally as if they have a stripe size of 512 KB, even though they are not striped.
  • 512 KB , 1 MB , 2 MB , 4 MB , 8 MB , 16 MB , or 32 MB: Size selected by a user.
read-ahead-size-numeric uint32 Numeric equivalents for read-ahead-size values.
  • -2: Stripe
  • -1: Adaptive
  • 0: Disabled
  • 524288: 512 KB
  • 1048576: 1 MB
  • 2097152: 2 MB
  • 4194304: 4 MB
  • 8388608: 8 MB
  • 16777216: 16 MB
  • 33554432: 32 MB
  • 2147483648: Maximum
volume-type string
  • base: Base volume
  • standard: Standard volume.
  • snapshot: Snapshot volume.
volume-type-numeric uint32 Numeric equivalents for volume-type values.
  • 0: standard
  • 3: snapshot
  • 15: base
volume-class string
  • • standard: Standard volume.
volume-class-numeric uint32 Numeric equivalents for volume-class values.
  • 0: standard
tier-affinity string
  • No Affinity: This setting uses the highest available performing tiers first and only uses the Archive tier when space is exhausted in the other tiers. Volume data will swap into higher performing tiers based on frequency of access and tier space availability
  • Archive: This setting prioritizes the volume data to the least performing tier available. Volume data can move to higher performing tiers based on frequency of access and available space in the tiers.
  • Performance: This setting prioritizes volume data to the higher performing tiers. If no space is available, lower performing tier space is used. Performance affinity volume data will swap into higher tiers based upon frequency of access or when space is made available
tier-affinity-numeric uint32 Numeric equivalents for tier-affinity values.
  • 0: No Affinity
  • 1: Archive
  • 2: Performance
snapshot string Shows whether the volume is a snapshot.
snapshot-retention-priority string The retention priority for snapshots of the volume.
  • never-delete: Snapshots will never be deleted.
  • high: Snapshots may be deleted after all eligible medium-priority snapshots have been deleted.
  • medium: Snapshots may be deleted after all eligible low-priority snapshots have been deleted.
  • low: Snapshots may be deleted.
Snapshots that are mapped or are not leaves of a volume's snapshot tree are not eligible for automatic deletion.
snapshot-retention-priority-numeric uint32 Numeric equivalents for retention-priority values.
  • 0: never-delete
  • 1: high
  • 2: medium
  • 3: low
volume-qualifier string
  • N/A: Not applicable.
volume-qualifier-numeric uint32 Numeric equivalent for the volume-qualifier value.
  • 0: N/A
blocksize uint32 The size of a block, in bytes.
blocks uint64 The number of blocks, whose size is specified by the blocksize property.
capabilities string For internal use only.
volume-parent string Parent volume serial number. For example, the serial number of a snapshot's master volume.
snap-pool string Not applicable.
replication-set string Not applicable.
attributes string Shows whether the volume's disks are single pathed.
virtual-disk-serial string Disk group serial number.
creation-date-time string The date and time, in the format year-month-dayhour:minutes:seconds(UTC), when the volume was created.
creation-date-time-numeric uint32 Unformatted creation-date-time value.
volume-description string
  • For HP-UX, a text value (set in-band by a host application) that identifies the volume.
  • For OpenVMS, a numeric value (set with the create volumeor set volume command) that identifies the volume to an OpenVMS host.
  • Blank by default.
wwn string World Wide Name of the volume.
progress string For a volume-copy operation, the percent complete (0%-99%).
progress-numeric uint32 Unformatted progress value.
container-name string Name of the pool that contains the volume.
container-serial string Serial number of the pool that contains the volume.
allowed-storage-tiers string Not supported.
allowed-storage-tiers-numeric uint32 Not supported.
threshold-percent-of-pool string For internal use only.
reserved-size-in-pages uint32 For internal use only.
allocate-reserved-pages-first string For internal use only.
allocate-reserved-pages-first-numeric uint32 For internal use only.
zero-init-page-on-allocation string For internal use only.
zero-init-page-on-allocation-numeric uint32 For internal use only.
large-virtual-extents string Shows whether the system will try to allocate pages in a sequentially optimized way to reduce I/O latency and improve performance.
large-virtual-extents-numeric uint32
  • 0: Disabled
  • 1: Enabled
raidtype string The RAID level of the disk group.
  • NRAID
  • RAID0
  • RAID1
  • RAID5
  • RAID6
  • RAID10
  • ADAPT
raidtype-numeric uint32 Numeric equivalents for raidtype values.
  • 0: RAID0
  • 1: RAID1
  • 2: ADAPT
  • 5: RAID5
  • 6: NRAID
  • 10: RAID10
  • 11: RAID6
pi-format string Disabled.
pi-format-numeric uint32 Disabled.
cs-replication-role string
  • Copy Source: The volume is the source for a volume copy operation.
  • Copy Destination : The volume is the destination for a volume copy operation.
  • Primary: The volume is the primary volume in a replication set.
  • Secondary: The volume is the secondary volume in a replication set.
  • (blank): Not applicable.
cs-copy-dest string
  • Off: Not applicable.
  • On: The volume is the destination for a volume copy operation.
cs-copy-dest-numeric uint32 Numeric equivalents for cs-copy-dest values.
  • 0: Off
  • 1: On
cs-copy-src string
  • Off: Not applicable.
  • On: The volume is the source for a volume copy operation.
cs-copy-src-numeric uint32 Numeric equivalents for cs-copy-src values.
  • 0: Off
  • 1: On
cs-primary string
  • Off: Not applicable.
  • On: The volume is the primary volume in a replication set.
cs-primary-numeric uint32 Numeric equivalents for cs-primary values.
  • 0: Off
  • 1: On
cs-secondary string
  • Off: Not applicable.
  • On: The volume is the secondary volume in a replication set.
cs-secondary-numeric uint32 Numeric equivalents for cs-secondary values.
  • 0: Off
  • 1: On
metadata-in-use string Amount of pool metadata currently being used by the volume.
metadata-in-use-numeric uint64 Unformatted metadata-in-use value in blocks.
health string Numeric equivalents for health values.
  • OK
health-numeric uint32 Numeric equivalents for health values.
  • 0: OK
health-reason string If Health is not OK, the reason for the health state.
health-recommendation string If Health is not OK, the recommended actions to take to resolve the health issue.
volume-group string If the volume is in a volume group, the name of the group. Otherwise, UNGROUPEDVOLUMES .
group-key string If the volume is in a volume group, the durable ID of the volume group. Otherwise, VGU .

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