Re: Newbie: SAN access
- From: "boatgeek" <dougvibbert@xxxxxxxxx>
- Date: 24 Aug 2005 18:29:38 -0700
to elaborate a little, windows 2000 cluster servers use something
called a cluster disk driver, which is built into the operating system
of advanced server and very simple to setup a basic share. The
cluster disk driver filters out the disk from the node which doesn't
own the resource. The nodes determine through a quorum whether the
operating system is still writing to the data device and it has a keep
alive pulse between the servers to determine the clusters network
status. The main limitation of windows cluster servers is that you
couldn't expand disks or add luns on the fly, but had to take down the
cluster servers.
A netware server does something similar in that it has a piece of the
operating system which also assigns ownership of a resource to a
particular device. Netware doesn't sync it's registry as do the
windows servers and give a poison pill a server which is having
problems. It can add luns on the fly, as can unix and linux.
there's really a lot more too this, a lot more. but if you're simply
seeking to share a lun, you're probably looking at a simple operating
system such as windows in a cluster. you can expand this to
geocluster geographically disperse nodes (though with windows they need
to be on the same vlan), go to very robust strategies of offsite
replication of LUNs for DR using virtual servers and vmware, but a
simple configuration is a fibre switch, a shared disk device and a
couple servers with HBAs.
.
- References:
- Newbie: SAN access
- From: manuel
- Re: Newbie: SAN access
- From: robertwessel2@xxxxxxxxx
- Newbie: SAN access
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