Computer Talk - SCSI striped array failure

Print Page | Close Window

SCSI striped array failure

Printed From: Speakerplans.com
Category: Other Chat
Forum Name: Computer Talk
Forum Description: Help and discussion about your manly PC or girly Mac
URL: https://forum.speakerplans.com/forum_posts.asp?TID=47449
Printed Date: 26 March 2026 at 10:56pm
Software Version: Web Wiz Forums 12.08 - https://www.webwizforums.com

Topic: SCSI striped array failure

Posted By: 4D
Subject: SCSI striped array failure
Date Posted: 17 January 2011 at 9:54pm

win2k
adaptec 3 channel card set to striped array mode
3 Scsi drives

one say fk you.

any clues

-------------
DMZ. "The bass was intense. Girls were literally running up to stand next to the subs"

Replies:

Posted By: The Builder
Date Posted: 17 January 2011 at 10:04pm

Late and tired, but a striped array with no parity has no redundancy. Lose a drive, lose the data.

http://www.raidrecoveryguide.com/techniques.html - http://www.raidrecoveryguide.com/techniques.html

Unless I'm forgetting or the explanation is not as I read it.

Shagnasty will know this subject best...

-------------
It just is.

Posted By: jonminns
Date Posted: 17 January 2011 at 11:09pm

Total loss i'm afraid unless there's some parity going on

This is where raid 5 wins

-------------
4 ohms is for wimps

Posted By: shagnasty
Date Posted: 17 January 2011 at 11:45pm

How failed is the drive, if you can get it to respin on another host adapter as a JBOD disk you may be able to plug it back onto the RAID card, load config from HDD and pull the data off.

Sometimes drives timeout on spin-up and get tagged shagged so removing all the physcial drives from the host, clear the array on host (flagged dead) and reconnecting all drives cause the HBA to reload config and if the disc spins up you could be able to lift the data.

I would do with a copy of Hiren's boot CD in the CDROM drive and a spare SATA or IDE HDD connected so you do pull the array back up you can instantly ghost the data to another drive...

Posted By: The Builder
Date Posted: 18 January 2011 at 9:38am

Freezer trick comes to mind as well.

-------------
It just is.

Posted By: jonminns
Date Posted: 18 January 2011 at 7:06pm

I've never had any success with the freezer

-------------
4 ohms is for wimps

Posted By: Mircea Bartic
Date Posted: 18 January 2011 at 9:02pm

tell me more about the freezer

I repaired computers on the side for about 9 years and didn't come across this method

-------------
general manager & head designer at nexus-acoustics research
http://www.facebook.com/nexus.acoustics.research" rel="nofollow - http://www.facebook.com/nexus.acoustics.research

Ex Nexus_3

Posted By: The Builder
Date Posted: 18 January 2011 at 10:05pm

Works in two ways, bearing failure on a drive, or overheating controller chip on drive.

Sealed in a bag, put in freezer:

What little lubrication that is left on drive spindle gets thicker, ergo drive spins true. Also everything contracts, shrinks in effect.

Broken chip on drive may work as it's super cold.

Old 2003 Western Digitals, Maxtor and IBM's going click crash usually respond well.

I recon I get away with about 4 in 10 like this, in the case of bearing type failure hanging the cold drive on its cable and swinging it about can also help.

OBVIOUSLY use the drive as a slave, not a boot, and be quick.

Article here, http://geeksaresexy.blogspot.com/2006/01/freeze-your-hard-drive-to-recover-data.html - http://geeksaresexy.blogspot.com/2006/01/freeze-your-hard-drive-to-recover-data.html although he tries to boot.

-------------
It just is.

Posted By: Mircea Bartic
Date Posted: 18 January 2011 at 10:08pm

interesting read

thanks

-------------
general manager & head designer at nexus-acoustics research
http://www.facebook.com/nexus.acoustics.research" rel="nofollow - http://www.facebook.com/nexus.acoustics.research

Ex Nexus_3