Dell PowerVault ME4 Series Storage System CLI Guide

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show pools


Description	Shows information about linear and virtual pools. The command will show information for all pools by default, or you can use parameters to filter the output. The system can have a maximum of two virtual pools. The system can have a maximum of two virtual pools. NOTE:For a virtual pool, new data will not be written to, or existing data migrated to, a degraded disk group unless it is the only disk group having sufficient available space for the data.
Minimum role	monitor
Syntax	show pools [type linear\|virtual] `[pool]` type linear\|virtual Optional. Specifies whether to show information for linear pools or for virtual pools. If this parameter is omitted, information will be shown for both types. pool Optional. The name or serial number of the pool for which to show information. If this parameter is omitted, information is shown for all pools
Output	Name The name of the pool. Serial Number The serial number of the pool. Class Linear: Linear pool. Virtual: Virtual pool. Total Size The total capacity of the pool. Avail The available capacity in the pool. Snap Size The pool capacity used by linear snap pools or virtual snapshots OverCommit Enabled: The allocated size of the volumes can exceed the physical capacity of the pool. Disabled: The allocated size of the volumes cannot exceed the physical capacity of the pool. Disk Groups The number of disk groups in the pool. Volumes The number of volumes in the pool. Low Thresh The low threshold for page allocation as a percentage of pool capacity. When this threshold is exceeded, event 462 will be logged with Informational severity. Mid Thresh The middle threshold for page allocation as a percentage of pool capacity. When this threshold is exceeded, event 462 will be logged. If the pool is not overcommitted, the event will have Informational severity. If the pool is overcommitted, the event will have Warning severity. High Thresh The high threshold for page allocation as a percentage of pool capacity. The threshold value is automatically calculated based on the available capacity of the pool minus 200 GB of reserved space. When this threshold is exceeded, event 462 will be logged. If the pool is not overcommitted, the event will have Informational severity. If the pool is overcommitted, the event will have Warning severity and the system will use write-through cache mode until page allocation drops back below this threshold. When the overcommit feature is disabled, the host does not lose read or write access to the pool volumes when the pool reaches or exceeds the high threshold value. When the overcommit feature is enabled, the storage system sends the data protect sense key Add, Sense: Space allocation failed write protect to the host when the pool reaches or exceeds the high threshold value. If the host is rebooted after the pool reaches or exceeds the high threshold value, the host loses read and write access to the pool volumes. The only way to regain read and write access to the pool volumes is to add more storage to the pool. Sec Fmt The sector format of disks in the pool. 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 pool 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). Health OK Degraded Fault N/A Unknown Reason If Health is not OK, this field shows the reason for the health state. Action If Health is not OK, this field shows recommended actions to take to resolve the health issue
Examples	Show information about all pools. # show pools Show information about virtual pools. # show pools type virtual
Basetypes	pools disk-groups tiers
See also	delete pools set pool show pool-statistics