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тАО06-21-2002 08:40 AM
тАО06-21-2002 08:40 AM
Solved! Go to Solution.
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тАО06-21-2002 08:49 AM
тАО06-21-2002 08:49 AM
Re: VA7100 Configuration
HTH
Marty
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тАО06-21-2002 09:01 AM
тАО06-21-2002 09:01 AM
SolutionI would suggest 2-3 LUNs for a database: one for logs, one for indices, and one for tablespaces.
Depending upon your database size vs. total capacity of the array, the VA may put your tablespaces in RAID 5, but would keep the logs (which have frequent sequential writes) in RAID 0/1. If you use less than 1/2 of the usable space of the array in AutoRAID mode, it will keep everything in RAID 0/1.
More LUNs than that will not increase your performance.
Good luck!
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тАО11-29-2002 03:09 AM
тАО11-29-2002 03:09 AM
Re: VA7100 Configuration
And then I want put them together with HP-UX LVM agin.
The idea is to have more fexibilty for expanding and
shrinking diskspace later wihtout a system outage by recrating a resized LUN.
I have to some BC scripting for backup an Usertest usages
OK it will be a bit more complicated -> no problem.
Any opinons to that idea.
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тАО12-01-2002 07:25 AM
тАО12-01-2002 07:25 AM
Re: VA7100 Configuration
http://www.hp.com/products1/storage/products/disk_arrays/midrange/da_perf_guide.pdf
http://www.hp.com/products1/storage/products/disk_arrays/infolibrary/va_perf_analysis.pdf
A couple of point to remember:
One LUN per RG (you failed to indicate your array model) is sufficient to get all the performance from the array ??? multiple LUNs do not increase the array performance. However, the system (the OS and application) must create enough concurrency thru the existing LUNs to demonstrate maximum array performance ??? this is particularly important for read operations (array write caching creates its own concurrency). The two components of this are OS driver queue depth per LUN and application concurrency.
If you have a 7400 or 7410, each RG is like an independent array. RGs can have a different number and type of disks installed, and (if the array is configured in the AutoRAID mode), one RG can be AutoRAID and the other RAID 1+0. This is managed by the LUN allocated capacity ??? if the space needed for the reserved LUNs can fit in RAID 1+0, then that???s what the array will use. If your interested, reply with the desired RAID 1+0 space, the type of disks you have, and I???ll tell you the magic capacity for RAID 1+0 only operation.