Date: Thu, 18 Feb 2010 19:30:41 -0600 From: Adam Vande More <amvandemore@gmail.com> To: matt@webcontracts.co.uk Cc: freebsd-questions@freebsd.org Subject: Re: Options for redundant storage cluster? Message-ID: <6201873e1002181730h5ea314d0p4a94db8eca48db04@mail.gmail.com> In-Reply-To: <7f7816241a0798cf35b2d4801325c503.squirrel@www.webcontracts.co.uk> References: <7f7816241a0798cf35b2d4801325c503.squirrel@www.webcontracts.co.uk>
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On Thu, Feb 18, 2010 at 7:00 PM, Matthew Law <matt@webcontracts.co.uk>wrote: > Hi, > > hopefully I'm not too far out posting this question here. It takes in a > lot of areas so I was unsure where to post it. If it belongs on another > ML please advise and I will re-post it there. > > I am researching options for a two node failover storage cluster. This is > primarily to provide shared storage (either iSCSI or NFS) for XenServer > VMs. I am looking to get the best bang for the buck and wondering if > FreeBSD might be a good choice? > > Hardware-wise we have available two identical supermicro chassis each with > 16 x SAS bays and a choice of AMD or latest Xeon 5500 CPUs, together with > as many gigabit cards as we need but the budget won't stretch to faster > networking. It would be nice to take advantage of ZFS and use two or > three 8-port SAS HBAs in each server rather than expensive hardware RAID > cards. > > We don't need to store more than around 2TB but we would like to > comfortably service around a 75 - 100 VM instances (the VMs on average, > are not too I/O heavy). Thin provisioning and snapshots would be nice, > too. > > My initial thoughts were that we might be able to use ZFS, cheap LSI 8 > port SAS HBAs together with a dozen or so SATA II drives and a couple of > Intel X25E SSDs to help things along. It would be great if these boxen > could network boot, so we can use all the drive bays for storage. I have > no idea what options exist for clustering NFS/redundancy. > > I would be very grateful for any advice - especially from anyone who has > experience in the same scenario. > > Thanks in advance, > > Matt. > I'd say right now ggated/ggatec + heartbeat is sort of roughly equivalent of DRBD and heartbeat. I think many of us are waiting for HAST though. http://lists.freebsd.org/pipermail/freebsd-announce/2009-October/001279.html -- Adam Vande More
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