Maybe if you TRIM it first, but the correct way to do that is like this: https://www.thomas-krenn.com/en/wiki/SSD_Over-provisioning_using_hdparm Jan > On 26 Aug 2015, at 18:58, Emmanuel Florac <eflorac@xxxxxxxxxxxxxx> wrote: > > Le Tue, 25 Aug 2015 17:07:18 +0200 > Jan Schermer <jan@xxxxxxxxxxx> écrivait: > >> There's a nice whitepaper about under-provisioning >> everyone using SSDs should read it >> >> http://www.sandisk.com/assets/docs/WP004_OverProvisioning_WhyHow_FINAL.pdf >> <http://www.sandisk.com/assets/docs/WP004_OverProvisioning_WhyHow_FINAL.pdf> > > BTW you can perfectly under-provision SSD by hand, by not allocating > all space when partitionning them. It works just as well as > firmware-set under-provisioning (just buy the cheaper model, and > don't use up all available space, and you get the higher-end model for > cheap :) > > -- > ------------------------------------------------------------------------ > Emmanuel Florac | Direction technique > | Intellique > | <eflorac@xxxxxxxxxxxxxx> > | +33 1 78 94 84 02 > ------------------------------------------------------------------------ _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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