vPar vs nPar

[Karthik S S]

Hi,

Could anyone explain me briefly on virtual and npartitions??. What is the key difference b/w them and which performs better?? ( We are planning to buy one rp8470)

Thanks,
Karthik

[Michael Tully]

Hi,

Have you looked here:


http://www.docs.hp.com/cgi-bin/fsearch/framedisplay?top=/hpux/onlinedocs/B2355-90762/B2355-90762_top.html&con=/hpux/onlinedocs/B2355-90762/00/01/139-con.html&toc=/hpux/onlinedocs/B2355-90762/00/01/139-toc.html&searchterms=vPAR&queryid=20030202-202309

Cheers
Michael

[Karthik S S]

Hi Michael,

After having a quick look of that link I can understand that vPar can be configured with in a nPar ..!!. But if possible could you please brief me on nPar??

Thanks
Karthik

[Michael Tully]

Hi,

The overview of the same document should help.

http://www.docs.hp.com/hpux/onlinedocs/B2355-90762/B2355-90762.html

Regards
Michael

[Stefan Farrelly]

Basically nPartitions are for Superdomes, to split it up into 8 cpu chunks/servers, whereas vPars can run on N-class also and it can break down into smaller 1 cpu chunks/servers.

For a superdome you can run nPars and vPars on the same server, for an N-class (rp7xxx/8xxx) you can only run vPars.

[Karthik S S]

Hi Stefan,

Thanks for that. But I guess rp8470 supports 2 npartitions and multiple vPars with nPartitions. Is that right??

Regards,
Karthik

[Ravi_8]

Hi karthik

Yes even rp8400/rp8470 also supports npartitions(but only 2 n partitions) we can create v partitions in each n partitions

[Stefan Farrelly]

An RP8400 is basically two N-class servers connected together, which is why you can split it into 2 nPars, or even more vPars.

[harry d brown jr]

Of course the number of Partitions, whether they are nPars or vPars depends upon the number of IO cards required for each partition.

Most "production" servers require redundant connections to disk devices, and of course at least one network connection. This adds up to at least 3 cards, and if your "servers" require any other connectivity, say a TAPE Drive, then you require at least 4 cards per partition.

With an rp8400, you get 8 IO slots PER nPar. Which means that if you wish to build production servers, then you can have 4 to 6 partitons total - 6 providing you use the internal devices within each nPar.

As for your question: "Which performs better", well that will TOTALLY depend upon your usage of the machine. How many partitions did you plan on using? What kind of applications would be running in each? What kind of external storage do you have? How many angels can fit on the head of a pin? How many CPU's, memory, IO cards, .....


live free or die
harry