[clug] aggregating disks across multiple machines
paulway at mabula.net
Wed Oct 28 02:15:00 MDT 2009
On 26/10/09 17:49, Daniel Pittman wrote:
> Michael James<michael at james.st> writes:
>> I've been asked to recommend a setup for a group of high end workstations.
>> They each have dual 4 core processors, 32 Gig of ram and 2 x 1.5 TB disks.
>> At present each machine has a separate 1.5TB /home and /data partition.
>> no redundancy, data will be lost from a single disk failure.
>> files will be copied around as jobs dictate => confusion and waste.
>> when partitions start to fill up, files will get put where they fit
>> not where they should go => even greater confusion.
> Mmmm. Some of that sounds like a user training and control issue, not a disk
> layout issue, to me. Assuming y'all do provide a central server:
I think Michael was talking about using both machines as some kind of
distributed storage, rather than a 'central server'. I want to find out about
this too. The key problem is that a lot of the cluster storage that works
like this assumes that each machine is accessing the same backend store. This
is convenient for those that have infiniband or fiberchannel cards lying
around and SAN units sitting in their cupboards, but for those of us with just
standard machines I haven't found any obvious candidates.
Anyone seen something that makes a bunch of disks spread across multiple
machines act like a big communal block device?
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