GFS (was Re: [Beowulf] High Performance for Large Database)

Laurence Liew laurenceliew at
Tue Nov 16 00:52:32 PST 2004


Yes. We have tested GNBD a while back... it however adds a performance 
penalty.. but it is a suitable method instead of SAN.


Chris Samuel wrote:
> On Tue, 16 Nov 2004 12:26 am, Laurence Liew wrote:
>>BTW, GFS was built for enterprise and not specifically for HPC... the
>>use of SAN (all nodes need to be connected to a single SAN storage)..
>>may be a bottleneck...
> You don't actually need to go through a SAN, you can export the devices via 
> GNBD instead and access them over an IP network.
> In fact if the devices in the back end are on a SAN then you can export the 
> devices from multiple serves via GNBD and the clients can write to multiple 
> servers at the same time.
> Caveat: This is just from reading the docs though, not from experience! :-)
> Chris
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