[gpfsug-discuss] Data Replication

Bryan Banister bbanister at jumptrading.com
Tue Aug 30 16:03:38 BST 2016


The NSD Client handles the replication and will, as you stated, write one copy to one NSD (using the primary server for this NSD) and one to a different NSD in a different GPFS failure group (using quite likely, but not necessarily, a different NSD server that is the primary server for this alternate NSD).
Cheers,
-Bryan

From: gpfsug-discuss-bounces at spectrumscale.org [mailto:gpfsug-discuss-bounces at spectrumscale.org] On Behalf Of Brian Marshall
Sent: Tuesday, August 30, 2016 9:59 AM
To: gpfsug main discussion list
Subject: [gpfsug-discuss] Data Replication

All,

If I setup a filesystem to have data replication of 2 (2 copies of data), does the data get replicated at the NSD Server or at the client?  i.e. Does the client send 2 copies over the network or does the NSD Server get a single copy and then replicate on storage NSDs?

I couldn't find a place in the docs that talked about this specific point.

Thank you,
Brian Marshall

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