Date: Fri, 22 Mar 2013 17:26:57 +0300 From: Zeus Panchenko <zeus@ibs.dn.ua> To: <freebsd-fs@freebsd.org> Subject: RAM amount recommendations for ZFS pools with ZIL and L2ARC on SSD Message-ID: <20130322172657.95912@relay.ibs.dn.ua>
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=2D----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 hi all, while discovering the subj, I found recommendations at: http://doc.freenas.org/index.php/Hardware_Recommendations#RAM =2D --------------------------------------------------------------------- ... a general rule of thumb is 1 GB of RAM for every 1TB of storage ... If you plan to use ZFS deduplication, a general rule of thumb is 5 GB RAM per TB of storage to be deduplicated. =2D --------------------------------------------------------------------- so, are these recommendations correct for ZFS pools with ZIL and L2ARC on SSD configurations? are there corellations between "RAM amount" and "with/without ZIL, L2ARC on separate devices pool configuration" ? =2D --=20 Zeus V. Panchenko jid:zeus@im.ibs.dn.ua IT Dpt., I.B.S. LLC GMT+2 (EET) =2D----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.19 (FreeBSD) iEYEARECAAYFAlFMeEEACgkQr3jpPg/3oyr6awCfYllLOsUVicDA6OHt644HHQNF aSUAn0lvTY86uKdm1D3nT6lz7KxmuRyA =3D9DNs =2D----END PGP SIGNATURE-----
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