[gpfsug-discuss] GPFS AFM experience

Andrew Dean adean at ocf.co.uk
Fri Jul 4 14:49:42 BST 2014

Hi Tom,

Absolutely AFM could be used in this manner.

A small GPFS instance on the local site would be used to cache the remote
filesystem in the off-site data centre.

There are sites already using AFM in this manner, it would also be
relatively straightforward to demonstrate AFM working by using a WAN
emulator to introduce latency/reduce bandwidth between Œcache' and
Œremote¹ GPFS Clusters if you wanted to carry out at a POC prior to the

Hope that helps.


Andrew Dean
HPC Business Development Manager
OCF plc

Tel: 0114 257 2200
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>-----Original Message-----
>From: gpfsug-discuss-bounces at gpfsug.org
>[mailto:gpfsug-discuss-bounces at gpfsug.org] On Behalf Of Tom King
>Sent: 01 July 2014 17:40
>To: gpfsug-discuss at gpfsug.org
>Subject: [gpfsug-discuss] GPFS AFM experience
>I've recently adopted a small two node GPFS cluster which is likely to be
>relocated to an off-site datacentre in the near future and I'm concerned
>that latency times are going to be impacted for on-site users.
>My reading of AFM is that an Independent Writer cache held on-site could
>mitigate this and was wondering whether anybody had any experience of
>using AFM caches in this manner.
>Tom King
>Head of Research Infrastructure
>IT Services
>Queen Mary University of London
>gpfsug-discuss mailing list
>gpfsug-discuss at gpfsug.org

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