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тАО09-26-2007 03:04 AM
тАО09-26-2007 03:04 AM
Hi,
My configuration:
Tru64 Unix v4.0G PK3
HSG80 ACS v88F-2
I created a LUN of 400Gb (in my HSG80)and I wish to know the maximun size of LUN (or disk) recognized by Tru64 (V4.0G).
Thank you in advance for your answer
Cordially
My configuration:
Tru64 Unix v4.0G PK3
HSG80 ACS v88F-2
I created a LUN of 400Gb (in my HSG80)and I wish to know the maximun size of LUN (or disk) recognized by Tru64 (V4.0G).
Thank you in advance for your answer
Cordially
Solved! Go to Solution.
3 REPLIES 3
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тАО09-26-2007 07:09 PM
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тАО09-26-2007 07:20 PM
тАО09-26-2007 07:20 PM
Re: LUN maximum size
Hi,
Thank you for your answer.
I already had problems on Solaris and I never created LUN higher than 140 Go on Tru64 4.0G
Regards,
Dominique
Thank you for your answer.
I already had problems on Solaris and I never created LUN higher than 140 Go on Tru64 4.0G
Regards,
Dominique
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тАО10-01-2007 01:54 AM
тАО10-01-2007 01:54 AM
Re: LUN maximum size
Not sure where this is documented, but the limit is related to the following:
The last addressable sector returned by READ CAPACITY must be 0x7FFF.FFFE or less. This is the last addressable sector (0..n) of the LUN. The kernel code then adds 1 to get the total number of sectors (0x7FFF.FFFF) on the LUN. Some places within the kernel, this size information is stored in a signed 32bit variable. If the returned capacity is larger than 0x7FFF.FFFE, then you get overflow and the value becomes negative. Unpredictable behavior can follow.
The last addressable sector returned by READ CAPACITY must be 0x7FFF.FFFE or less. This is the last addressable sector (0..n) of the LUN. The kernel code then adds 1 to get the total number of sectors (0x7FFF.FFFF) on the LUN. Some places within the kernel, this size information is stored in a signed 32bit variable. If the returned capacity is larger than 0x7FFF.FFFE, then you get overflow and the value becomes negative. Unpredictable behavior can follow.
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