Dell PowerVault ME4 Series Storage System CLI Guide

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show disk-groups


Description	Shows information about disk groups. The command will show information for all disk groups by default, or you can use parameters to filter the output.
Minimum role	monitor
Syntax	show disk-groups [detail] [pool `pool`] [`disk-groups`]
Parameters	[detail] Optional. This parameter shows additional detail about disk groups. [pool `pool`] Optional. Specifies the name or serial number of the pool that contains the disk groups for which to show information. If this parameter is omitted, information is shown for disk groups in all pools. [`disk-groups`] Optional. A comma-separated list of the names or serial numbers of the disk groups for which to show information. A name that includes a space must be enclosed in double quotes. If this parameter is omitted, information is shown for all disk groups.
Output	Properties are described in alphabetical order. % of Pool Shown by the detail parameter. The percentage of pool capacity that the disk group occupies. Action If Health is not OK, this field shows recommended actions to take to resolve the health issue. Active Drive Spin Down Delay Shown by the detail parameter. For spinning disks in a linear disk group, the period of inactivity after which the disks and dedicated spares will automatically spin down, from 1 to 360 minutes. The value 0 means spin down is disabled. For virtual storage, not applicable. Active Drive Spin Down Enable Shown by the detail parameter. Disabled: DSD is disabled for the disk group. Enabled - all spinning: DSD is enabled for the disk group. Partial spin-down: DSD is enabled for the disk group and its disks are partially spun down to conserve power. Full spin-down: DSD is enabled for the disk group and its disks are fully spun down to conserve power. ADAPT Actual Spare Capacity Sown by the detail parameter. For an ADAPT disk group, the actual spare capacity in GiB. For a non-ADAPT disk group, N/A. Blocksize Shown by the detail parameter. The size of a block, in bytes. Chunk Size Shown by the detail parameter. For RAID levels except NRAID and RAID 1 and RAID 50, the chunk size for the disk group. For NRAID and RAID 1, chunk-size has no meaning and is therefore shown as not applicable (N/A). For RAID 50, the disk-group chunk size calculated as: configured-chunk-size x (subgroup-members - 1). For a disk group configured to use 64-KB chunk size and 4-disk subgroups, the value would be 192k (64KB x 3). Class Shown by the detail parameter. Linear: The disk group acts as a linear pool. Virtual: The disk group is in a virtual pool. Current Job Completion Shown by the detail parameter. See Job%, below Current Job DRSC: A disk is being scrubbed. EXPD: The disk group is being expanded. INIT: The disk group is initializing. RBAL: The ADAPT disk group is being rebalanced. RCON: At least one disk in the disk group is being reconstructed. VDRAIN: The virtual disk group is being removed and its data is being drained to another disk group. VPREP: The virtual disk group is being prepared for use in a virtual pool. VRECV: The virtual disk group is being recovered to restore its membership in the virtual pool. VREMV: The disk group and its data are being removed. VRFY: The disk group is being verified. VRSC: The disk group is being scrubbed. Blank if no job is running. Current Owner Shown by the detail parameter. See Own, below. Disks The number of disks in the disk group. Free The amount of free space in the disk group, formatted to use the current base, precision, and units. Health OK Degraded Fault N/A Unknown Health Reason Shown by the detail parameter. See Reason, below. Health Recommendation Shown by the detail parameter. See Action, above. Job% 0%-99%: Percent complete of running job Blank if no job is running (job has completed) Name The name of the disk group. Own Either the preferred owner during normal operation or the partner controller when the preferred owner is offline. Pool The name of the pool that contains the disk group. Preferred Owner Shown by the detail parameter. Controller that owns the disk group and its volumes during normal operation. RAID The RAID level of the disk group. Reason If Health is not OK, this field shows the reason for the health state. Sec Fmt The sector format of disks in the disk group. 512n: All disks use 512-byte native sector size. Each logical block and physical block is 512 bytes. 512e: All disks use 512-byte emulated sector size. Each logical block is 512 bytes and each physical block is 4096 bytes. Eight logical blocks will be stored sequentially in each physical block. Logical blocks may or may not be aligned with physical block boundaries. Mixed: The disk group contains a mix of 512n and 512e disks. This is supported, but for consistent and predictable performance, do not mix disks of different sector size types (512n, 512e). Sector Format Shown by the detail parameter. See Sec Fmt, above. Serial Number Shown by the detail parameter. The serial number of the disk group. Size The capacity of the disk group, formatted to use the current base, precision, and units. Spares Shown by the detail parameter. For a linear disk group, the number of spares assigned to the disk group. For a virtual disk group, 0. Status CRIT: Critical. The disk group is online but isn't fault tolerant because some of its disks are down. DMGD: Damaged. The disk group is online and fault tolerant, but some of its disks are damaged. FTDN: Fault tolerant with a down disk. The disk group is online and fault tolerant, but some of its disks are down. FTOL: Fault tolerant and online. MSNG: Missing. The disk group is online and fault tolerant, but some of its disks are missing. OFFL: Offline. Either the disk group is using offline initialization, or its disks are down and data may be lost. QTCR: Quarantined critical. The disk group is critical with at least one inaccessible disk. For example, two disks are inaccessible in a RAID-6 disk group or one disk is inaccessible for other fault-tolerant RAID levels. If the inaccessible disks come online or if after 60 seconds from being quarantined the disk group is QTCR or QTDN, the disk group is automatically dequarantined. QTDN: Quarantined with a down disk. The RAID-6 disk group has one inaccessible disk. The disk group is fault tolerant but degraded. If the inaccessible disks come online or if after 60 seconds from being quarantined the disk group is QTCR or QTDN, the disk group is automatically dequarantined. QTOF: Quarantined offline. The disk group is offline with multiple inaccessible disks causing user data to be incomplete, or is an NRAID or RAID-0 disk group. STOP: The disk group is stopped. UNKN: Unknown. UP: Up. The disk group is online and does not have fault-tolerant attributes. Tier Performance: The disk group is in the highest storage tier, which uses SSDs (high speed). Standard: The disk group is in the storage tier that uses enterprise-class spinning SAS disks (10k/15k RPM, higher capacity). Archive: The disk group is in the lowest storage tier, which uses midline spinning SAS disks (<10k RPM, high capacity). Read Cache: The disk is an SSD providing high-speed read cache for a storage pool.
Examples	Show information about all disk groups. # show disk-groups pool A Show information about disk group dg0002 in pool B. # show disk-groups pool B dg0002
Basetypes	disk-groups status
See also	show disks show pools