NEC Express5800/R120f-1M Guía de usuario descargar pdf (Pagina 130)

Monitoring a Medium Error to see if they occur

frequently

The Universal RAID Utility registers a “Physical Device Medium Error Frequently Detected” event message into RAID log

when “Physical Device Medium Error (Correctable)” event occurs 20 or more times within one hour on the same

Physical Device. When this event message is registered, please replace the Physical Device.

If Patrol Read or Consistency Check is executed when “Physical Device Medium Error Frequently Detected” event occurs,

the Patrol Read or the Consistency Check is automatically stopped to suppress deterioration of access performance to

the Physical Device. If you want to execute Consistency Check through entire Logical Drive even if a Medium Error is

detected frequently, use the raidcmd with “Automatic Stop Disabled” option. See the section “Checking Logical Drive

Consistency”.

Monitoring a Medium Error to see if they occur

intermittently

The Universal RAID Utility registers a “Physical Device Medium Error Intermittently Detected” event message into RAID

log when “Physical Device Medium Error (Correctable)” event occurs 20 or more times within a week on the same

Physical Device. When this event message is registered, please replace the Physical Device.

Behavior of “Physical Device Medium Error Intermittently Detected” event recorded is different from when “Physical

Device Medium Error Frequently Detected” event recorded.

Even if the Patrol Read or the Consistency Check is doing, when the “Physical Device Medium Error Intermittently

Detected” event records, these functions are not suspended automatically.

Monitoring unexpected change of RAID

configuration

The Universal RAID Utility registers a “RAID System unstable” event message into RAID log when there is a Physical

Device which is excluded from the RAID configuration even though it is not failure. When this event message is

registered, please check to see if there is a Physical Device whose status is Online and which is excluded from the RAID

configuration. If you find it, please replace the RAID Controller and the Physical Device. This function is supported when

you use the N8103-109/128/G128/134/135 RAID Controllers.

Monitoring the lifetime of SSD

When you use the N8103-176/177/178/179 RAID Controllers and SSD which support “Monitoring the lifetime SSD”,

Universal RAID Utility monitors the lifetime of SSD.

The degree of lifetime progress of SSD can be confirmed by the [Endurance] in the property of a physical device.

[Endurance] is starts from [Safe] as follows, and the status is transition according as SSD is used by user, indicates [End

of life] finally.

If detecting an S.M.A.R.T error in the after of the state of SSD transferred to [End of life], an "Lifetime Error" event is

recorded. If a [Lifetime Error] event is recorded, please replace SSD concerned. Even if a [Lifetime Error] event is not

recorded, if [Endurance] is [End of life] in the property of the SSD, please replace the SSD.

[Endurance]

Safe

Progress

Warning

Need to replace

End of life

Safe

Danger

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