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 Post subject: Cloning SAS drives - JBOD?
PostPosted: July 17th, 2018, 6:13 
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Joined: May 28th, 2016, 9:16
Posts: 128
Location: Karlsruhe / Germany
Hi,

can some one give me a hint, what I can do? A friend of a friend has a 24x 600GB Raid-5 disk array. The HDDs are fine, but the controller most likely is gone. The IT support tried to replace the controller, but the new one did now work, I have no idea why. So my idea was to clone the drives, before they are doing something to the RAID. The reason for my suggestion is because the company has absolutely no backups of the data.

Here in my lab I have PC-3000 SAS for this. But I'm about 700km away from the disk array. So the question is, how it's possible to clone a SAS drive (to an Image File)? The problem is, that the most SAS controllers want to create a new RAID with the drive. And this is going to write something on the disk. But what's about JBOD for example? Will this give me the direct access to the drive for imaging?


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 Post subject: Re: Cloning SAS drives - JBOD?
PostPosted: July 17th, 2018, 8:15 
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Joined: June 17th, 2017, 18:30
Posts: 28
Location: Russia
You need a dumb SAS HBA, not a RAID controller. RAID controller will write its metadata, overwriting whatever is on the disk, even if the new array is created as JBOD or RAID0 of one disk.


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 Post subject: Re: Cloning SAS drives - JBOD?
PostPosted: July 18th, 2018, 1:22 
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Joined: February 13th, 2014, 12:13
Posts: 162
Location: Isfahan
Use SAS Write-Blocker

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 Post subject: Re: Cloning SAS drives - JBOD?
PostPosted: July 18th, 2018, 20:28 
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Joined: January 29th, 2012, 1:43
Posts: 460
Location: United States
The SuperMicro AOC-SASLP-MV8 is an example of a non-raid controller that will work. Someone recommended it to me, and with it I can access individual SAS disks in Linux for cloning out of the box with no need to install any drivers. I bought it used as it is obsolete. The newer model AOC-SAS2LP-MV8 states "JBOD mode only. No RAID support". That would be what you are looking for, as stated a "dumb" controller that does not support hardware raid.

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 Post subject: Re: Cloning SAS drives - JBOD?
PostPosted: July 21st, 2018, 10:22 
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Joined: February 13th, 2014, 12:13
Posts: 162
Location: Isfahan
https://www.cru-inc.com/products/wiebetech/redport-sas/

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 Post subject: Re: Cloning SAS drives - JBOD?
PostPosted: July 21st, 2018, 11:58 
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Joined: February 9th, 2009, 16:13
Posts: 2071
Location: Ontario, Canada
I just landed a SATSASDUP11 from Startech. We have SAS cards too, but it is nice to plug and play.

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 Post subject: Re: Cloning SAS drives - JBOD?
PostPosted: July 21st, 2018, 17:23 
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Joined: December 8th, 2010, 11:37
Posts: 562
Location: Ottawa, Canada
lcoughey wrote:
I just landed a SATSASDUP11 from Startech. We have SAS cards too, but it is nice to plug and play.

Yikes! That's a bit pricey!

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