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тАО10-25-2001 02:39 PM
тАО10-25-2001 02:39 PM
Solved! Go to Solution.
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тАО10-25-2001 03:13 PM
тАО10-25-2001 03:13 PM
SolutionYou have asked a very complicated question; you just don't know it.
The AutoRAID's automatically switch between RAID 1/0 (for speed) and RAID 5 (for capacity).
At least 10% of the total capacity of the array
stays in RaID 1/0. The idea is that the most recently used data is migrated to the faster RAID 1/0 format. With 8 4.3GB disks and Active Hot Spare ON the maximum capacity is 21.8 GB and with Active Hot Spare OFF it's 25.4GB. The array always has to keep enough space to cover the failure on the largest single drive. You can mix & match drives within the enclosure as well. The usable space can be divided among a maximum of 8 LUN's which can be any size you choose. You can't point to any drive or drives and say that LUN3 is there because LUN3 is spread over all the drives. Diskinfo simply reports the size of whatever you set the LUN to.
The commands which are used to display and manage the array are arraydsp and arraymgr. Man arraydsp and arraymgr for details. If you are new to this, this easiest method is to use SAM to set your array up.
Externally you AutoRAID usually has 2 HVD SCSI buses which are then split into 4 internal SE-SCSI buses.
That should at least get you started; now go find your AutoRAID manuals.
Regards, Clay
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тАО10-25-2001 03:37 PM
тАО10-25-2001 03:37 PM
Re: Auto raid
Well what you are seeing is actually true. With 8 (4.3 disks) you actually have 24 GB of usable disk space, but you must be having dual paths to the autoraid (alternate links) thats why the total is adding up to double of the actual space available.
Here is a link to find out the Autoraid's usable disk capacity tool
http://www.hp.com/essd/capacity.html
Here is a manual for Managing Autoraid 12H
http://www.hp.com/cposupport/manual_set/lpg28365.pdf
Someother useful links
http://www.hp.com/cposupport/manindex/hpsurestor19162_eng_man.html
http://www.hp.com/products1/storage/disk_arrays/midrange/12h/index.html
Some of the commonly used commands
arraydsp -i
(gives the serial number of the array)
arraydsp -a
(gives the whole configuration of the array)
arraycfg
(for creating new LUNS)
Most of the array commands are in /opt/hparray/bin, so look at their man pages. Also check out the docs.
-HTH
Ramesh
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тАО10-25-2001 03:41 PM
тАО10-25-2001 03:41 PM
Re: Auto raid
you said, you have 6 LUNS configured (each of 7.45 GB)? but the actual number of disks are 8(4.3GB) hmm...
can you post the output of ioscan -kfnC disk and arraydsp -a?
-Regards
Ramesh
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тАО10-25-2001 03:45 PM
тАО10-25-2001 03:45 PM
Re: Auto raid
Thanks for your quick response, You're right I'm only on this job for 4 months and just completed the first HP-UX Sys. Adm class. I think I'll get the manual soon since we'll upgrade the system from 10 to 11 very soon. With members like your capacity and willing to help in this forum I'm convinced this is the right place for me to find answers and remove my anxiety caused by work. Thanks again
Regards,
Sean
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тАО10-25-2001 03:54 PM
тАО10-25-2001 03:54 PM
Re: Auto raid
Thanks for your precious info, as my previous reply indicated I'll definitely have more questions in the future, your answer will be highly apprecited.
Regards,
Sean
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тАО10-26-2001 08:26 AM
тАО10-26-2001 08:26 AM
Re: Auto raid
If this an AutoRAID that has been passed to you, I would also check that the firmware on the controllers is at a reasonable version.
With some of the older firmware it was possible to lose all data on the AutoRAID.