Re: QLA2300, Infortrand and LBD?

From: tester7 A. <hidden>
Date: 2004-06-22 00:31:57

I have sent the those 2 questions to the Infortrend. When I get the answer, 
I will get back to you.

Thank you very much.


From: James Bottomley <redacted>
To: "tester7 A." <redacted>
CC: SCSI Mailing List <redacted>, tech@storageone.co.kr
Subject: Re: QLA2300, Infortrand and LBD?
Date: 21 Jun 2004 09:09:44 -0500

On Sun, 2004-06-20 at 03:43, tester7 A. wrote:
quoted
SCSI device sdc: 3022966784 512-byte hdwr sectors (1547759 MB)
SCSI device sdc: drive cache: write through
sdc: sdc1
Attached scsi disk sdc at scsi3, channel 0, id 0, lun 0
The drive itself replied with that capacity, which is incorrect.  It's
supposed to reply with the largest possible capacity (0xffffffff) and we
use that as a signal to retry with READ_CAPACITY_16.

Could you contact the support line of the array and make sure of two
things:

1) It does actually support single LUNs with a capacity of >2TB (lots of
arrays don't)
2) And if 1) is true, why is it not responding correctly to the READ
CAPACITY(10)? The spec (spc-2 Rev 8, 5.2.11) says "If the number of
logical blocks exceeds the maximum value[...]the device server shall
transfer FFFFFFFFh in the RETURNED LOGICAL BLOCK ADDRESS field"

James
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