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Dell PowerVault ME4 Series Storage System CLI Guide

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controllers

This basetype is used by show configuration and show controllers.

Table 1. controllers properties
Name Type Description
durable-id string
  • controller a
  • controller b
controller-id string
  • A: Controller A.
  • B: Controller B.
controller-id-numeric uint32
  • 0: B
  • 1: A
serial-number string
  • Serial number of the controller module.
  • Not Available: The controller module is down or not installed.
hardware-version string Controller module hardware version.
cpld-version string Complex Programmable Logic Device (CPLD) firmware version.
mac-address string Controller network port MAC address.
node-wwn string Storage system World Wide Node Name (WWNN).
ip-address string Controller network port IP address.
ip-subnet-mask string Controller network port IP subnet mask.
ip-gateway string Controller network port gateway IP address.
ip6-link-local-address string The link-local IPv6 address.
ip6-auto-address string The automatically configured IPv6 address of the controller, when applicable.
ip61-address string First IPv6 address for the controller management port, if set.
ip62-address string Second IPv6 address for the controller management port, if set.
ip63-address string Third IPv6 address for the controller management port, if set.
ip64-address string Fourth IPv6 address for the controller management port, if set.
disks uint32 Number of disks in the storage system.
number-of-storage-pools uint32 Number of virtual pools in the storage system.
virtual-disks uint32 Number of disk groups in the storage system.
cache-memory-size uint32 Controller cache memory size (MB).
system-memory-size uint32 Controller module cache memory size, in MB, including CPU memory available to I/O.
host-ports uint32 Number of host ports in the controller module.
drive-channels uint32 Number of expansion ports in the controller enclosure.
drive-bus-type string Controller interface to disks.
  • SAS
drive-bus-type-numeric uint32 Numeric equivalent for drive-bus-type value.
  • 8: SAS
status string
  • Operational
  • Down
  • Not installed
status-numeric uint32 Numeric equivalents for status values.
  • 0: Operational
  • 1: Down
  • 2: Not installed
failed-over string Indicates whether the partner controller has failed over to this controller.
  • No: The partner controller has not failed over to this controller.
  • Yes: The partner controller has either failed or been shut down, and its responsibilities have been taken over by this controller.
There will be a delay between the time that the value of the status property becomes Down for one controller and the time that the value of the failed-over property becomes Yes for the other controller. This time period is the time that it takes for a controller to take over the responsibilities of its partner.
failed-over-numeric uint32 Numeric equivalents for failed-over values.
  • 0: No
  • 1: Yes
fail-over-reason string If failed-over is Yes, a reason for the failover appears; otherwise, Not applicable appears.
fail-over-reason-numeric uint32 Numeric equivalents for fail-over-reason values.
sc-fw string Storage Controller firmware version.
vendor string Controller manufacturer.
model string Controller model.
platform-type string Enclosure platform type.
platform-type-numeric uint32 Numeric equivalents for platform-type values.
multicore string Shows whether the controller module is using multiple application processing cores.
  • Enabled: Multiple cores are active.
  • Disabled: A single core is active.
multicore-numeric uint32 Numeric equivalents for multicore values.
  • 0: Enabled
  • 1: Disabled
sc-cpu-type string Storage Controller processor type.
sc-cpu-speed sint32 Storage Controller processor speed.
internal-serial-number string Internal serial number of the controller.
cache-lock string Shows whether hosts are prevented from using the SCSI MODE SELECT command to change the write-back cache setting of the storage system.
  • No: Hosts are permitted to disable write-back cache.
  • Yes: Hosts are prevented from disabling write-back cache.
cache-lock-numeric uint32 Numeric equivalents for cache-lock values.
  • 0: No
  • 1: Yes
write-policy string The current, system-wide cache policy as determined by auto-write-through (AWT) logic. This value is not settable by users. If an AWT trigger condition (such as a CompactFlash failure) is met, the cache policy for all volumes changes to write-through, overriding the volume-specific settings. When the problem is corrected, the cache policy reverts to the value configured for each individual volume.
  • write-back: This is the normal state.
  • write-through
  • Not up: The controller is not up.
write-policy-numeric uint32 Numeric equivalents for write-policy values.
  • 0: write-back
  • 1: write-through
  • 2: Not up
description string FRU long description.
part-number string Part number for the FRU.
revision string Hardware revision level for the FRU.
dash-level string FRU template revision number.
fru-shortname string FRU short description.
mfg-date string Date and time, in the format year-month-day hour:minutes:seconds (UTC), when the PCBA of the controller was programmed.
mfg-date-numeric uint32 Unformatted mfg-date value.
mfg-location string City, state/province, and country where the FRU was manufactured.
mfg-vendor-id string JEDEC ID of the FRU manufacturer.
locator-led string Shows the state of the locator LED on a controller module.
  • Off
  • On
locator-led-numeric uint32 Numeric equivalents for locator-led values.
  • 0: Off
  • 1: On
ssd-alt-path-io-count uint8 The ratio of I/Os that alternate between the primary path and the alternate path to the SSDs. Thus, 2 means every second I/O will go to the alternate path, or 3 means every third I/O will go to the alternate path.
health string
  • OK
  • Degraded
  • Fault
  • Unknown
  • N/A
health-numeric uint32

Numeric equivalents for health values.

  • 0 : OK
  • 1: Degraded
  • 2: Fault
  • 3: Unknown
  • 4: N/A
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.
position string Position of the controller module, as viewed from the back of the enclosure.
  • Left
  • Right
  • Top
  • Bottom
position-numeric uint32 Numeric equivalents for position values.
  • 0: Left
  • 1: Right
  • 2: Top
  • 3: Bottom
rotation string Rotation of the controller module in the enclosure.
  • 0 Degrees
  • 90 Degrees
  • 180 Degrees
  • 270 Degrees
rotation-numeric string Numeric equivalents for position values.
  • 0: 0 Degrees
  • 1: 90 Degrees
  • 2: 180 Degrees
  • 3: 270 Degrees
phy-isolation string Shows whether the automatic disabling of SAS expander PHYs having high error counts is enabled or disabled for this controller.
  • Enabled: PHY fault isolation is enabled.
  • Disabled: PHY fault isolation is disabled.
phy-isolation-numeric uint32 Numeric equivalents for phy-isolation values.
  • 0: Enabled
  • 1: Disabled
redundancy-mode string The operating mode of the sytem, also called the cache redundancy mode.
  • Independent Cache Performance Mode: For a dual-controller system, controller failover is disabled and data in a controller’s write-back cache is not mirrored to the partner controller. This improves write performance at the risk of losing unwritten data if a controller failure occurs while there is data in controller cache.
  • Active-Active ULP: Both controllers are active using ULP (Unified LUN Presentation). Data for volumes configured to use write-back cache is automatically mirrored between the two controllers to provide fault tolerance.
  • Single Controller: The enclosure contains a single controller.
  • Failed Over: Operation has failed over to one controller because its partner is not operational. The system has lost redundancy.
redundancy-mode-numeric uint32 Numeric equivalents for redundancy-mode values.
  • 1: Independent Cache Performance Mode
  • 2: Active-Active ULP
  • 3: Single Controller
  • 4: Failed Over
  • 5: Down
redundancy-status string
  • Redundant with independent cache: Both controllers are operational but are not mirroring their cache metadata to each other.
  • Redundant: Both controllers are operational.
  • Operational but not redundant: In active-active mode, one controller is operational and the other is offline. In single-controller mode, the controller is operational.
  • Down: This controller is not operational.
  • Unknown: Status information is not available.
redundancy-status-numeric uint32 Numeric equivalents for redundancy-status values.
  • 0: Operational but not redundant
  • 1: Redundant with independent cache
  • 3: Redundant
  • 4: Down
  • 5: Unknown
unhealthy-component Embedded; see unhealthy-component.
ip-address Embedded; see network-parameters.
port-details Embedded; see port.
enclosure-id Embedded; see expander-ports.
compact-flash Embedded; see compact-flash.
expander-details Embedded; seeexpanders.

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