Drive is not responding

[Noble Sebastian]

hi all ,

my hp server os hp 11,my root mail (/var/mail/root) showing drive not responding but i use ioscan command that time all disk displayed ..(driver s/w sate is clamied)

what is saying mail
i attach that mail file to this

thanks all

[Sandy Chen]

Hi,

I think there is nothing wrong with the disk, from the mail it is saying that temperature on the disk enclosure is lower than the low threshold (15 C degrees). I think the low temp is the one that causing the disk not responding for a while.

Perhaps you should consider to put the temp higher a bit

Regards,
Sandy

[Noble Sebastian]

thanks

hi

why this drive is message comeing ?

Disk at hardware path 0/7/0/0.11.0 : Drive is not responding

[Bill Hassell]

The ioscan program just sends out a simple SCSI ID command to the drive. It is not a test of functionality at all. The drive has a lot of electronics that could partially fail so the drive not responding errors indicate that the drive needs replacing. The EMS warning seems to indicate that the enclosure is very cold (14C = 57F). Is your computer room less than 15C (60F)?

Extra-cold rooms have been recommended in the past to solve overheating problems, but modern computer room design debunks this requirement. Temperatures below 20C (68F) do not extend equipment life and just waste energy. On the other hand, randomly racked servers, blades and disk arrays with lousy airflow and computer rooms with racks too close together or cold air flowing only from overhead vents are the primary reasons for overtemp conditions.

[George Liu_4]

very rare problem. Is this hard drive just plugged in from delivery?

[Kyris]

Ioscan does not always find a faulty drive. I always try the dd command as well before deciding:
dd if=/dev/rdsk/c?t?d? of=/dev/null bs=1024 count=1.
OR
dd if=/dev/rdsk/c0t4d0 of=/dev/null bs=256k count=10 & - reads only a few MB

But please get the temperature sorted out and then look into anything else.

kyris