Re: Low cost PCI-E unRAID - Supermicro AOC-SASLP-MV8 Driver/LBA questions for HW owners/users

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On Fri, Jan 21, 2011 at 11:04 AM, Stan Hoeppner <stan@xxxxxxxxxxxxxxxxx> wrote:
> Michael Evans put forth on 1/21/2011 10:00 AM:
>> The SUPERMICRO AOC-SASLP-MV8 PCI Express x4 Low Profile SAS SAS RAID
>> Controller seems to fit my needs and budget except for one glaring
>> omission on Supermicro's product page, and every other site that
>> blindly copies it.
>>
>> Has anyone tested this hardware with a 48-bit LBA required drive (EG
>> one of the 3TB drives that still exposes 512k sectors)?
>
> NewEgg has an excellent return policy:
> http://www.newegg.com/Product/Product.aspx?Item=N82E16816101358
>
> But, BTW, if you can afford over $1000 of 3TB drives, why are you demanding to
> go so cheap with the HBA?  There are plenty of much better LSI based dual
> SFF8087 HBAs available with no LBA or driver issues.  For instance:
> http://www.newegg.com/Product/Product.aspx?Item=N82E16816117157
>
> $155 Quality/compatible LSI SAS1068E chip+driver vs
> $109 Marvell 88SE6480 less than quality chip+driver
>
> If you can afford 5+ 3TB drives you can certainly afford an extra ~$50 for a
> decent quality known to work SAS/SATA HBA.  I say 5+ because you're obviously
> starting out with 5 or you'd be looking at cards with a single SFF8087, or
> simply 4 individual SATA connectors.
>
> I can't imagine an easier decision to make:  $50 for guaranteed piece of mind,
> performance, compatibility.
>
> --
> Stan
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>

I wouldn't mind spending an extra $50 on the controller IF I knew it
supported 48 or 64 bit LBA, however neither the documentation on Intel
and NewEgg specifies what is supported.  In fact I have to assume
PCI-E 1.0 since it doesn't specify (not that it's an issue, 8 lane 1x
vs 4 lane 2x is more or less the same thing; though 4x is more future
proof since there is likely to be a slot that big on future
motherboards at /least/ for physics GPU support).

Are you suggesting the LSI based Intel card because you know it to
properly support >32 bit LBA?
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