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Monitoring Faults of Physical Devices

The Universal RAID Utility can take the following measures to monitor failures of Physical Devices detected by RAID

Controllers.

RAID Viewer

raidcmd

RAID Log Buzzer OS Log Alert



Depending on type of

RAID Controller



If a Physical Device used for a Logical Drive is failed, the status of the Physical Device changes to [Failed].

In addition, the status of the Logical Drive using the Physical Device changes to [Degraded] or [Offline] depending on

the redundancy. The status of the Physical Device and Logical Drive remains unchanged until the problem is solved.

If the Physical Device (SSD) used as CacheCade fails, the status of the Physical Device (SSD)

changes to Fail and the capacity of the SSD Cache Drive that includes the Physical De

vice

(SSD) decreases.

SSD C

ache Drive operates as Read Cache of HDD. Therefore, if the status of any one of the

Physical Devices (SSD)

is “Online”, the status of the SSD Cache Drive is “Online”.

The RAID Viewer indicates the status of Physical Devices and Logical Drives with their icons on the Tree View and their

properties. In addition, the RAID Viewer shows the status from the viewpoint of the RAID System and from the viewpoint

of the server on the Tree View.

The raidcmd indicates the status of Physical Devices and Logical Drives on their properties.

The display of the RAID Viewer depending on the change of Physical

Device status is described below.

Logical drive

Physical device

Physical device (Hot Spare)

[Symbols]

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NEC Express5800/R120f-1M Guía de usuario Pagina 121