| W. Chris Shank on 16 Sep 2007 01:14:09 -0000 |
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Yeah - but i want some disk redundancy. I think I'm going to use the VMs for some of our systems and stick with real servers for a few of the more important ones. I just can't have the super import ones getting hosed because some jackass decided to upload is MP3 collection. ----- Original Message ----- From: Toby DiPasquale <toby@cbcg.net> To: Philadelphia Linux User's Group Discussion List <plug@lists.phillylinux.org> Sent: Friday, September 14, 2007 8:28:41 PM GMT-0500 Subject: Re: [PLUG] help me design my server On Fri, Sep 14, 2007 at 10:50:34AM -0400, W. Chris Shank wrote: > I need to spec-out and architect another VMWare and/or Xen VM host server. Currently I have one with 8 cores, 4GB ram, and 1.5TB HDD as 4 500GB SATA with hardware raid5. We are starting to hit the wall with this setup running 5 VMs on it. Particularly, it seems the HDD I/O is the bottleneck. If one VM hits the disks hard it makes the others pretty much useless. > > So I have a budget to get another honking server. I'm confident the quad-core Xeons with the vm extensions are sufficient. I'll go ahead and bump the RAM to 16G too. The area I'm most concerned with is the disk I/O. I'm thinking that instead of one big RAID5, I'll pair smaller drives - so i'll have 4 sets of 2 250G SATA mirrors. Then direct it so that 2-3 VMs are on each raid. Or should I go SCSI and keep one large RAID5? > > So if you had the $$, what would you get and how would you configure it. Amazon works around this problem by giving each Xen instance a disk on its own spindle. This may not work for you, but I'm just putting it out there... -- Toby DiPasquale ___________________________________________________________________________ Philadelphia Linux Users Group -- http://www.phillylinux.org Announcements - http://lists.phillylinux.org/mailman/listinfo/plug-announce General Discussion -- http://lists.phillylinux.org/mailman/listinfo/plug -- W. Chris Shank ACE Technology Group, LLC www.myremoteITdept.com (610) 640-4223 -------------------------------- Security Note: To protect against computer viruses, e-mail programs may prevent sending or receiving certain types of file attachments. Check your e-mail security settings to determine how attachments are handled. ___________________________________________________________________________ Philadelphia Linux Users Group -- http://www.phillylinux.org Announcements - http://lists.phillylinux.org/mailman/listinfo/plug-announce General Discussion -- http://lists.phillylinux.org/mailman/listinfo/plug
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