cephfs - mds hardware recommendation for 40 million files and 500 users

[Mike Miller <millermike287@xxxxxxxxx>]

Hi,

we have started to migrate user homes to cephfs with the mds server 32GB 
RAM. With multiple rsync threads copying this seems to be undersized; 
the mds process consumes all memory 32GB fitting about 4 million caps.

Any hardware recommendation for about 40 million files and about 500 users?

Currently, we are on hammer 0.94.5 and linux ubuntu, kernel 3.13.

Thanks and regards,

Mike

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