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тАО12-28-2003 06:58 PM
тАО12-28-2003 06:58 PM
I had a impression that if we configure N par in rp8400 server then those partition would affect if any partition goes down.
But one of my seniour today told me we can have redundancy in every level except bus level. So if bus level got any problem then it would affect all the partitioned servers.
Would anybody clear it please ?
Regds
SS
Solved! Go to Solution.
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тАО12-28-2003 07:15 PM
тАО12-28-2003 07:15 PM
Re: Does RP8400 has redundant capability ?
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тАО12-28-2003 07:45 PM
тАО12-28-2003 07:45 PM
Re: Does RP8400 has redundant capability ?
it is depend on the way you configure RP8400 in N-pars.
Everything which is shared will only cause full system to go down other wise bo.
Sunil
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тАО12-28-2003 07:55 PM
тАО12-28-2003 07:55 PM
Re: Does RP8400 has redundant capability ?
Actually we don't want to share any partitions resources with other partitions. But is it true "rp8400 does not have bus level dependancy" ?
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тАО12-28-2003 09:56 PM
тАО12-28-2003 09:56 PM
Solutionwhat do you mean with "bus level" ? The rp8400 has lots of busses. There are busses on the IO Backplane (Ropes and PCI busses), on the Cell Board(s) (Memory & CPU busses) and on the system backplane (Crossbar bus).
The IO and Cell Board busses are completely independent if located in deifferent npars.
The backplane busses are connecting each cell board to the two (redundant) crossbar chips on the system backplane.
Because the crossbar chips and the cell boards are connected via point-to-point links (switched fabric), no bus problem on one of the above busses should effect other cell boards that are running in independent partitions.
=> the rp8400 has bus level redundancy, because there are no shared busses between n-partitions.
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тАО01-07-2004 03:10 AM
тАО01-07-2004 03:10 AM
Re: Does RP8400 has redundant capability ?
I just had a npar/vpar course online...
NO n/vPar will ever share resources of anykind... cpu memory fiber nor HBAs.
The only exception is when you have the CPU pool where cpu can be utilized from a pool and put back in the pool for use by another Npar/Vpar.
The new cell-based boxes, Keystone/superdome/matterhorn are built for redunandcy... If you take a look at the architecture you will clearly see it.
here is a great link to it
http://www.hp.com/products1/servers/rackoptimized/rp8400/index.html
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тАО01-21-2004 09:14 AM
тАО01-21-2004 09:14 AM
Re: Does RP8400 has redundant capability ?
Now you will be able to run your other partition(s) until it comes time to replace those components, but replacement will require shutting the server down.