Date: Thu, 20 Apr 2000 13:34:18 -0500 (CDT) From: Bryan Bradsby <Bryan.Bradsby@capnet.state.tx.us> To: Jin Guojun <jin@george.lbl.gov> Cc: matrix@chat.ru, msmith@FreeBSD.ORG, questions@FreeBSD.ORG Subject: Re: IDE RAID (Adaptec one) Message-ID: <Pine.BSF.4.21.0004201321460.36732-100000@localhost> In-Reply-To: <200004201817.LAA01940@george.lbl.gov>
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> I do not know Adaptec one, but I know 3ware has something similar.
> We asked them for an evaluation board (retail is about $270) and come with
> linux driver source. It works quite well under linux. It can be configured
> as 2x2 stripe, 1x4 stripe (RAID1), and mirror (RAID0). The 2x2 stripe can
> have 32MBps I/O rate which is not bad at all.
If your goal is raw speed of disk I/O (not size), then don't overlook
fast wide SCSI-2
Here is a snippet from dmesg. SCSI at 80 MBps using the standard ahc0
driver.
da0: <SEAGATE ST39102LC 0004> Fixed Direct Access SCSI-2 device
da0: 80.000MB/s transfers (40.000MHz, offset 15, 16bit), Tagged Queueing
Enabled
Not IDE, or RAID, but fast and supported now.
-bryan
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