Date: Tue, 18 Nov 2014 17:26:35 +0100 From: "bsd@todoo.biz" <bsd@todoo.biz> To: Liste FreeBSD <freebsd-questions@freebsd.org> Subject: Re: Hardware RAID or software for ZFS Message-ID: <9AAAB1C9-C75F-48BB-A21A-9979B61E44B5@todoo.biz> In-Reply-To: <546B6F7F.2010902@gmail.com> References: <7F1B1DC4-46CA-4B96-836B-2D2D494F60E8@todoo.biz> <546B6D72.3060105@qeng-ho.org> <546B6F7F.2010902@gmail.com>
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> Le 18 nov. 2014 =C3=A0 17:10, Andrei Brezan <andrei693@gmail.com> a = =C3=A9crit : >=20 >=20 > On 11/18/14 17:01, Arthur Chance wrote: >> On 18/11/2014 15:28, bsd@todoo.biz wrote: >>> Hi, >>>=20 >>>=20 >>> I would need your help in order to figure out which will be the best >> > in order to setup a server which will be used as a Poudriere = server. >>>=20 >>> My question is related to the usage of hardware RAID controller = (JBOD) >> > or software based controller (graid) >>>=20 >>> Server we are targeting is a SuperMicro 1018R-WC0R - 1U >>>=20 >>> I used to build my server using an HBA such as LSI SAS 9207-8i or = LSI >> > SAS 9201-16i Then I=E2=80=99ll configure the HBA as JBOD so that = disks can be >> > presented correctly to the system so that we can build our ZFS FS = on >> > top of that. >>>=20 >>>=20 >>> My sysadmin suggested me to get rid of the HBA and use direct >> > connectivity and Graid. >>>=20 >>>=20 >>> I would like to have some feedback on various aspects : >>>=20 >>> 1. performance >>> 2. usability >>> 3. problem one might have encountered >>=20 >> If you're intending to use ZFS don't use JBOD or graid, just tell = zpool to create a pool out of individual disks using raidz (or raidz[23] = if you have enough disks). >>=20 >> As for your hardware choice, I'll let others with more experience = than me answer. >>=20 >=20 > JBOD is presenting the disk directly to the OS so it is well suited = for a ZFS setup. There are still raid controllers that have both raid = capabilities and JBOD although some manufacturers try really hard to = separate them for $ome reason. Most of the times you can re-write the = firmware on such a device and have either raid capabilities or JBOD. >=20 Ok.=20 So with SAS disks, I=E2=80=99ll most probably need a controller / HBA = with JBOD capabilities ?=20 Like that disks will be presented directly to the OS where I=E2=80=99ll = handle the RAIDZ as needed.=20 Is that correct ?=20 Or is there any other =C2=AB native =C2=BB option ?=20 Thx very much.=20 ________________________________________________ = =C2=AB?=C2=BB=C2=A5=C2=AB?=C2=BB=C2=A7=C2=AB?=C2=BB=C2=A5=C2=AB?=C2=BB=C2=A7= =C2=AB?=C2=BB=C2=A5=C2=AB?=C2=BB=C2=A7=C2=AB?=C2=BB=C2=A5=C2=AB?=C2=BB=C2=A7= =C2=AB?=C2=BB=C2=A5=C2=AB?=C2=BB=C2=A7=C2=AB?=C2=BB=C2=A5=C2=AB?=C2=BB=C2=A7= = =C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2= =AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF= =C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2= =AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF Your provider of OpenSource Appliances www.osnet.eu =09 ________________________________________________ = =C2=AB?=C2=BB=C2=A5=C2=AB?=C2=BB=C2=A7=C2=AB?=C2=BB=C2=A5=C2=AB?=C2=BB=C2=A7= =C2=AB?=C2=BB=C2=A5=C2=AB?=C2=BB=C2=A7=C2=AB?=C2=BB=C2=A5=C2=AB?=C2=BB=C2=A7= =C2=AB?=C2=BB=C2=A5=C2=AB?=C2=BB=C2=A7=C2=AB?=C2=BB=C2=A5=C2=AB?=C2=BB=C2=A7= = =C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2= =AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF= =C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2= =AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF PGP ID --> 0x1BA3C2FD
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