Offlist exchange forwarded with permission. ----- Forwarded message from Troy Benjegerdes <[EMAIL PROTECTED]> -----
From: Troy Benjegerdes <[EMAIL PROTECTED]> Date: Wed, 12 Nov 2008 12:19:21 -0600 To: Eugen Leitl <[EMAIL PROTECTED]> CC: Kyle Schochenmaier <[EMAIL PROTECTED]> Subject: Re: [Pvfs2-users] linux vserver and PVFS2 User-Agent: Icedove 1.5.0.14eol (X11/20080509) What's your application? I was just looking at infiniband card prices, and it might cost you less than 4xGigE to get a 24 port IB switch and these cards.. http://www.colfaxdirect.com/store/pc/viewPrd.asp?idcategory=6&idproduct=12 For tolerating node failures, I would do some sort of software mirroring across nodes, using either something like DRDB, or Infiniband SRP. Eugen Leitl wrote: >I'm planning to eventually operate a 20+ node cluster of Debian boxes >(2-4 cores AMD64, 8 GByte RAM, about 1-2 TByte RAID 1, 4x GBit Ether >interfaces, probably with jumbo frames) with a unified filestore. > >A few questions I've been unable to answer by searching: > >Can I make Linux vserver guests fs live on PVFS2? >If I don't use unification >http://linux-vserver.org/Frequently_Asked_Questions#Unification >? > >How much aggregate throughput can I expect with some 20 >nodes, with a modern 7 krpm SATA drive (RAID 1 pair, about >80 MByte/s sustainable throughput, or so)? > >Is there a way to set up PVFS2 to tolerate 1-2 node losses on >above 20-node assembly, and how much of the raw storage would I lose >that way? > >Thanks, > > ----- End forwarded message ----- -- Eugen* Leitl <a href="http://leitl.org";>leitl</a> http://leitl.org ______________________________________________________________ ICBM: 48.07100, 11.36820 http://www.ativel.com http://postbiota.org 8B29F6BE: 099D 78BA 2FD3 B014 B08A 7779 75B0 2443 8B29 F6BE _______________________________________________ Pvfs2-users mailing list [email protected] http://www.beowulf-underground.org/mailman/listinfo/pvfs2-users
