Volume (EqualLogic) Check

The Volume (EqualLogic) Check monitors the status of a disk volume on a Dell EqualLogic SAN.

Basic Check information

Check Type SNMP
Check Type SNMP
Instances on a Device 1
Supported Systems/Applications Dell EqualLogic SANs that support the EQLMEMBER-MIB MIB.
Device Class Server - Generic, Server - Windows

Troubleshooting

Issue Corrective Action
Failed Please check that the correct SNMP community string is configured in Network Discovery for the device
201 Exception OID_TYPE_NOSUCHOBJECT Missing OID object on the device for specific metric

SNMP Properties Queried

Object Descriptors Numerical OID
$Description 1.3.6.1.4.1.12740.5.1.7.1.1.6
$Size 1.3.6.1.4.1.12740.5.1.7.1.1.8
$AdminStatus 1.3.6.1.4.1.12740.5.1.7.1.1.9
$AllocatedSpace 1.3.6.1.4.1.12740.5.1.7.7.1.13
$OperStatus 1.3.6.1.4.1.12740.5.1.7.7.1.8

Calculations Performed

Status Detail Description
Admin Status

Specifies whether the target volume has been configured as either online or offline by the administrator.

If a volume is offline, the ISCSI initiators cannot access it.

When lost blocks that belong to a particular volume are found, the Operational Status of the volume is set to not-available-due-to-lost-cached-blocks.

When the volume is in this state and if the user chooses to ignore the lost blocks by setting the volume status to Online, the subsystem automatically sets the Admin Status to online-lost-cached-blocks.

The online-lost-cached-blocks state of Admin Status indicates that the user acknowledged and acted upon the lost-blocks state of the volume.

On re-start, and if the subsystem finds a volume with $AdminStatus as online-lost-cached-blocks, it will configure the Operational Status to Online instead of not-available-due-to-lost-cached-blocks as the user has already acknowledged the lost-blocks state and has chosen to ignore them.
Admin Status Description

Mapped as:

  1. online
  2. offline
  3. online-lost-cached-blocks
  4. online-control
  5. offline-control
Operational Status Specifies the current operational status of the volume.
Operational Status Description

Mapped as:

  1. available
  2. not-available
  3. not-available-due-to-snap-reserve-met
  4. not-available-due-to-members-offline
  5. not-available-due-to-lost-cached-blocks
  6. not-available-due-to-thin-max-growth-met
  7. not-available-due-to-nospace-for-auto-grow
  8. not-available-due-to-missing-pages
Volume Size (MB) Specifies the total size of the monitored volume. Volume size is rounded to a multiple of 15MB. For thin provisioned volumes, this value represents the advertized size of the volume.
Used Space (%) Calculated as ((Allocated Space/Size)*100) and expressed as a percentage of the total size of the volume.