[GRLUG] OT, .. Rebuildable RAID1

[scott.tanner at comcast.net]

Likewise , I don't have any experience with that card, but I have several servers running basic mirrors using LSI based HBA cards . These have no onboard cache and limit ed features compared to the more expensi ve RAID cards, but support R AID 0,1 and 1EE . Here's a nice listing of the vendor rebranding of these cards : http://forums.servethehome.com/raid-controllers-host-bus-adapters/19-lsi-raid-controller-hba-equivalency-mapping.html 

I've bought several RAID and HBA cards used in the past, and had very few failures with them overall . I found a couple of the SAS HBA's on e ba y for as low as $35 , thou gh for the same price: 

http://www.ebay.com/itm/LSI-Logic-MegaRAID-SAS-8308ELP-8-Port-RAID-Controller-with-07-00015-01-cable-/230978416840?pt=US_Server_Disk_Controllers_RAID_Cards&hash=item35c762f0c8 

http://www.ebay.com/itm/Adaptec-RAID-ASR-3405-128mg-CONTROLLER-SAS-SATA-/230982452345?pt=US_Server_Disk_Controllers_RAID_Cards&hash=item35c7a08479 



Regards, 
Scott 
----- Original Message -----
From: "Matt Behrens" <matt at zigg.com> 
To: "Mailing List for LUG in greater Grand Rapids, MI area." <grlug at grlug.org> 
Sent: Monday, May 20, 2013 8:26:27 AM 
Subject: Re: [GRLUG] OT, .. Rebuildable RAID1 

On May 19, 2013, at 11:04 PM, L. V. Lammert <lvl at omnitec.net> wrote: 

> Following up, ... has anyone experience with this style of SATA RAID card? 
> The specs state Linux compatible, so would that not mean they provide 
> "real" RAID support and could be a HW option to the Intel MSM? 


I've got nothing specific on this card, but Linux support is achievable with a driver, so that's not necessarily a sign it's a real hardware controller. 

I have a server with Intel ESRT2 upstairs. There seems to be enough support to boot Linux and you can build your RAID set from a BIOS screen, but you need a driver disk at install time to have it actually function once the kernel is up and running. Without the driver, you have no running system. 

Hurts a little that said driver is only available from Intel in poorly-documented binary form, rather than included in the kernel directly. 


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