Sure, if you use a policy to migrate between two tiers, it will move files up or down based on heat. Something like this (flas and disk pools): rule grpdef GROUP POOL gpool IS flash LIMIT(75) THEN Disk rule repack MIGRATE FROM POOL gpool TO POOL gpool WEIGHT(FILE_HEAT) Bob Oesterlin Sr Storage Engineer, Nuance HPC Grid 507-269-0413 From: <gpfsug-discuss-bounces at spectrumscale.org> on behalf of Andreas Landhäußer <alandhae at gmx.de> Reply-To: gpfsug main discussion list <gpfsug-discuss at spectrumscale.org> Date: Tuesday, September 27, 2016 at 1:04 PM To: Marc A Kaplan <makaplan at us.ibm.com>, gpfsug main discussion list <gpfsug-discuss at spectrumscale.org> Subject: [EXTERNAL] Re: [gpfsug-discuss] File_heat for GPFS File Systems as far as I understand, if a file gets hot again, there is no rule for putting the file back into a faster storage device? -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://gpfsug.org/pipermail/gpfsug-discuss_gpfsug.org/attachments/20160927/9be0a614/attachment.html>