Dell PowerVault MD3000i Hardware Owner's Manual

Also see for PowerVault MD3000i: Getting started Tuning guide System installation guide User guide Information update

Contents

Dell PowerVault MD3000i Hardware Owner's Manual Manual pdf 78 page image

78 Troubleshooting Your EnclosureHard Controller Failures and LockdownConditionsCertain events can cause a RAID controller module to fail and/or shut down.Unrecoverable ECC memory or PCI errors, or critical physical conditions cancause lockdown. If your RAID storage array is configured for redundant accessand cache mirroring, the surviving controller can normally recover withoutdata loss or shutdown.Typical hard controller failures are detailed in the following sections.Invalid EnclosureThe RAID controller module is supported only in a Dell-supported enclosure.Upon installation in the enclosure, the controller performs a set of validationchecks. The enclosure status LED is lit with a steady amber color while theRAID controller module completes these initial tests and the controllers arebooted successfully. If the RAID controller module detects a non-Dellsupported enclosure, the controller aborts startup. The RAID controllermodule will not generate any events to alert you in the event of an invalidenclosure, but the enclosure status LED is lit with a flashing amber color toindicate a fault state.For full details on the LEDs and their interpretation, see "Back-PanelIndicators and Features" on page 18.ECC ErrorsRAID controller firmware can detect ECC errors and can recover from asingle-bit ECC error whether the RAID controller module is in a redundantor nonredundant configuration. A storage array with redundant controllerscan recover from multi-bit ECC errors as well because the peer RAIDcontroller module can take over, if necessary.The RAID controller module will failover if it experiences up to 10 single-biterrors, or up to three multi-bit errors.