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March 30, 2005, 2:49 am
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I have a problem with two hd Maxtor DiamondMax Plus 9 160gb ata/133 in raid
I have an Asus P4C800-E De luxe motherboard with the Promise PDC20378
All is gone ok for six months then, last evening at the boot I had a message
that told me that one of the two disks was off line.
There is anybody can help me!!!!
Re: Raid 0 Offline!!!
So onboard s/w RAID - boot code in the BIOS.
RAID-0 means Striping - there is no mirroring or redundancy.
o You need to identify if the disk has failed
---- verify *cables are connected ok* -- especially if SATA
---- verify if the BIOS can detect the drive
---- verify if any RAID config is stored in the BIOS (& changed)
---- verify if a manufacturers diagnostic app will work
o If a drive has failed, the data is non-recoverable
---- data-recovery firms can recover data from RAIDs
---- however RAID-0 is striping, and things get pricey
---- cheapest -- drive controller board failure
---- expensive -- head detached from the arm, motor failure
So it comes down to "do you have a backup"?
With 2 drives you have a greater chance of drive failure than 1 drive.
With RAID-0 there is more chance of failure than with 1 drive, and if
either drive fails you lose all data from the array - it is called RAID 0.
RAID-0 usage requires both:
1) Data *recreatable verbatim from another source*
2) Speed is of utmost importance re application or money
In a RAID-0 environment, watch drive temps - emphasis should be
given to keeping HDs cool as temperature does affect their longevity.
One reason why servers run noisy & get stuck in machine rooms :-)
Check the easiest first - cables (power & data) are easy to knock off
with SATA drives, then the manufacturers diagnostic diskette. The
diagnostic apps have non-destructive tests, as well as telling you in
the first instance whether the drive is basically alive or not.
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