Solved

SCSI RAID Mirrored Array - What happens if the controller breaks?

Posted on 2004-04-22
2
406 Views
Last Modified: 2010-04-03
Hello all, following my previous question, we've decided to go with a single channel SCSI RAID controller from LSI, but I have one more check to make....

the question is...is it possible to read the data off a disk that had been in a mirrored SCSI RAID array from a normal SCSI controller, should our SCSI RAID controller die on us?

For example, if we connected our drives up to the SCSI RAID controller, and create a mirrored RAID array and then, at some point down the line, the RAID controller fails (_not_ a hard disk that is part of the array), would it be possible to bring the system back up by simply removing one of the disks from the broken controller, and connecting that disk to the working (original) SCSI non-RAID interface?

Cheers in advance
Ben
0
Comment
Question by:bcops
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
2 Comments
 
LVL 1

Accepted Solution

by:
Pide earned 250 total points
ID: 10889816
No.
The way raw data is handled onto the SCSI disk differs from controller to controller (surely from brand to brand, sometimes from model to model on the same brand).

If you pick up a mirrored SCSI disk and want it to work, you should consider to have another "same-branded" controller on the recovery side.

For some simple ATA (onboard) controller it may work, but don´t count on it for complex (multi-RAID mode) SCSI/FC controllers.
0
 

Author Comment

by:bcops
ID: 10890248
Cheers, that should be fine, and I think what we'll do is buy one controller, test to see whether the discs would be recoverable on a different controller, and then make our decisions on buying a second one based on that

The points are yours :-)
Ben
0

Featured Post

Optimizing Cloud Backup for Low Bandwidth

With cloud storage prices going down a growing number of SMBs start to use it for backup storage. Unfortunately, business data volume rarely fits the average Internet speed. This article provides an overview of main Internet speed challenges and reveals backup best practices.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

AWS Glacier is Amazons cheapest storage option and is their answer to a ‘Cold’ storage service.  Customers primarily use this service for archival purposes and storage of infrastructure backups.  Its unlimited storage potential and low storage cost …
Create your own, high-performance VM backup appliance by installing NAKIVO Backup & Replication directly onto a Synology NAS!
This tutorial will walk an individual through the process of installing the necessary services and then configuring a Windows Server 2012 system as an iSCSI target. To install the necessary roles, go to Server Manager, and select Add Roles and Featu…
This Micro Tutorial will teach you how to reformat your flash drive. Sometimes your flash drive may have issues carrying files so this will completely restore it to manufacturing settings. Make sure to backup all files before reformatting. This w…

707 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question