[ale] RAIDS ARE NICE WHEN THEY WORK.

[Jeff Lightner]

When I used SCO full time it had AFS (Acer Fast File System).   

Looking at a legacy SCO system I have here divvy shows it has:

EAFS for boot and HTFS for root, u, u10 and u20.

I'd concur that you can't recover hardware RAID to software RAID.  The
latter would have extra overhead on the disks themselves whereas the
former likely kept track of the RAID config within the controller with
other information on the disks as well.

If you could find a replacement for the controller though you might be
able to recover the HW RAID assuming the disks themselves had not been
impacted. 

If you have tape and the ability to create a software RAID I'd certainly
think that would be the fasted way to recover.

-----Original Message-----
From: ale-bounces at ale.org [mailto:ale-bounces at ale.org] On Behalf Of H.
To: ale at ale.org
A. Story
Sent: Thursday, June 22, 2006 10:32 PM
To: Atlanta Linux Enthusiasts
Subject: Re: [ale] RAIDS ARE NICE WHEN THEY WORK.

Benjie wrote:

>Is it an LSI SATA or SCSI HBA?  I haven't mounted a SCO partition
>under Linux in more than 8 years, and I'm not sure that it is still
>possible.  I don't remember what FS they use,  and I don't think it is
>possible to recreate a hardware array with software raid.
>
>On 6/22/06, H. A. Story <adrin at bellsouth.net> wrote:
>  
>
>>I need a little help with RAIDS.  I have a need to get the data of the
>>array of drives but the RAID controller has gone bad.  It is an LSI
>>controller.  I saw something once where someone on the web did DD
images
>>of each drive in raid and was able to get those back into the correct
>>order and make a software raid.  This file system is not a Linux
Native
>>OS.  It is SCO.  Has anyone here done something like this?   I would
>>assume at this point that not all vendors use the same protocols in
the
>>raids and I really wonder how a software raid would figure out the
>>stripping.  Think I would have better luck going through backup tapes
at
>>this point.
>>
>>Adrin
>>
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>  
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It is SCSI.  I think the filesystem is HTFS.   I am restoring another 
server tonight, so I will know later.   We where thinking that it would 
be impossible to recreate a hardware RAID with Software, also.   And we 
don't want to spend the $$$ just to get some old scripts and then kill 
the system.


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