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тАО11-17-2003 08:02 AM
тАО11-17-2003 08:02 AM
Hi,
I am configuring a va7410 with 7.5T of diskspace. Currenlty, I only have 2 HBA per machine and one acts as a alt/path. So, really, I only have one path to the machine. I created 20G LUNS and added them to a few volume groups. And, then, I began to wonder; What happends when I run out of SCSI addresses? My LUNs are c1t0d1,c1t0d2, etc.. So, what happens when I reach c1t15d7? Do I run out. When I do the math, I only have 120 or so LUNS to give with the IDs. (120*20G) is far less than 7.5T. Can someone help me out here.
Thanks
Yates
I am configuring a va7410 with 7.5T of diskspace. Currenlty, I only have 2 HBA per machine and one acts as a alt/path. So, really, I only have one path to the machine. I created 20G LUNS and added them to a few volume groups. And, then, I began to wonder; What happends when I run out of SCSI addresses? My LUNs are c1t0d1,c1t0d2, etc.. So, what happens when I reach c1t15d7? Do I run out. When I do the math, I only have 120 or so LUNS to give with the IDs. (120*20G) is far less than 7.5T. Can someone help me out here.
Thanks
Yates
Solved! Go to Solution.
3 REPLIES 3
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тАО11-17-2003 08:30 AM
тАО11-17-2003 08:30 AM
Solution
This white paper might help..
http://www.docs.hp.com/hpux/onlinedocs/netcom/maxlun-whitepaper-v1.0.pdf
-USA..
http://www.docs.hp.com/hpux/onlinedocs/netcom/maxlun-whitepaper-v1.0.pdf
-USA..
Good Luck..
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тАО11-17-2003 02:02 PM
тАО11-17-2003 02:02 PM
Re: VA7410 LUN limitation
Hello Yates,
Refer to this link for info.
http://www.hp.com/products1/storage/products/disk_arrays/midrange/va7410/infolibrary/index.html
HTH.
Regards,
Hemanth
Refer to this link for info.
http://www.hp.com/products1/storage/products/disk_arrays/midrange/va7410/infolibrary/index.html
HTH.
Regards,
Hemanth
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тАО11-18-2003 07:54 AM
тАО11-18-2003 07:54 AM
Re: VA7410 LUN limitation
The VA-7410 supports 1024 LUNs (0 thru 1023). Volume Set Addressing is used for disk arrays - so if you create e.g., LUN 923 and ioscan & insf, you will see the physical path .a.b.c.7.3.3 (which is 7*128 + 3*8 + 3) and its enumerated device file.
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