Date: Sun, 13 Jan 2008 11:46:17 +0100 From: Adriaan de Groot <groot@kde.org> To: freebsd-hardware@freebsd.org Subject: Re: External SATA JBOD Message-ID: <200801131146.22683.groot@kde.org> In-Reply-To: <4789E639.1040604@fuckner.net> References: <4789E639.1040604@fuckner.net>
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[-- Attachment #1 --] On Sunday 13 January 2008, Michael Fuckner wrote: > Can this be done with esata and a port multiplier in the box like this one: > http://raidsonic.de/de/pages/products/external_cases.php?we_objectID=4239 I did something similar with an Addonics 4-drive housing and a SiI 3124 based SATA controller. That meant writing some of the driver for the 3124, but it was fun (and the Soren did the heavy lifting). > I want to use software Raid via ZFS, so this should be a dumb chassis. > Is anyone using a simliar configuration succesfully? Are port > multipliers supported by FreeBSD? Do I need any special Sata-controller? > Can I read SMART information? I don't think PM is supported yet. Certainly not in 6-STABLE, possibly in 7. I remember Soren was delaying PM work until NCQ was in; I had PM support without NCQ in 6-STABLE at one point, but that severely limits the total throughput of the drives. You may be better off with a 4-port card and a multilane cable (my HW setup is an X4200 with four red SATA cables snaking out the back from the 3124 to the external drives enclosure, which has 4 SATA ports on the back). -- These are your friends - Adem GPG: FEA2 A3FE Adriaan de Groot [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.4 (FreeBSD) iD8DBQBHiev+oBcIkmyNJhIRAqymAKCd60YwDHyovmXvcuGbqZNXB552WgCbBq62 1SzMXCcDCc/yh3WtALXaS6Y= =N/oW -----END PGP SIGNATURE-----
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