Date: Thu, 18 Mar 2010 10:44:14 -0400 From: Mike Tancsa <mike@sentex.net> To: Andy Wodfer <wodfer@gmail.com>, freebsd-questions <freebsd-questions@freebsd.org> Subject: Re: Hardware RAID controller questions - 3Ware vs RocketRaid Message-ID: <201003181444.o2IEicCp049595@lava.sentex.ca> In-Reply-To: <23ed14b81003180137n61261b5axa22677a0a7bbe544@mail.gmail.co m> References: <23ed14b81003180137n61261b5axa22677a0a7bbe544@mail.gmail.com>
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At 04:37 AM 3/18/2010, Andy Wodfer wrote:
>Hi,
>We're setting up two backup servers where each server will have about 4TB of
>harddrives (for now) connected (4x1TB and 8x500GB drives). Last night we ran
>into trouble with the 3ware controllers we have (9650SE-8LPML) because we
>couldn't create a larger RAID5 than 1.99TB.
Are you sure its the controller that was giving that error ? I ran
into something similar with my Areca controller on a backup server. I
ended up creating 2 raid sets, one for the boot OS and the other for
the backup spool and used gpart for the larger than 2TB RS. Perhaps
the same needs to be done on the 3ware
eg
# df -h
Filesystem Size Used Avail Capacity Mounted on
/dev/da0s1a 1.9G 496M 1.3G 28% /
devfs 1.0K 1.0K 0B 100% /dev
/dev/da1s1d 29G 10G 16G 39% /usr
/dev/da1s1e 33G 5.0G 26G 16% /var
/dev/da0s1d 61G 50G 6.4G 89% /var/db
/dev/da2p1 2.6T 797G 1.6T 33% /backup
zbackup1 2.7T 1.2T 1.4T 46% /zbackup1
I would go for the 3ware over the RocketRaid. We have used the 3ware
cards for some time and they have been very reliable for us. The disk
replacement process is well designed and has been reliable for us
over the years. We also use some of the Areca cards and they have
been good too. Not much experience with the RocketRaid.
---Mike
--------------------------------------------------------------------
Mike Tancsa, tel +1 519 651 3400
Sentex Communications, mike@sentex.net
Providing Internet since 1994 www.sentex.net
Cambridge, Ontario Canada www.sentex.net/mike
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