From owner-freebsd-scsi  Mon Sep 17  7:13:51 2001
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Date: Mon, 17 Sep 2001 18:10:22 +0400 (MSD)
From: Alexey Koptsevich <kopts@astro.ioffe.rssi.ru>
To: Bryan Taylor <btaylor@berkano.pair.com>
Cc: freebsd-scsi@freebsd.org, freebsd-questions@freebsd.org
Subject: Re: are backplanes needed for IDE RAID?
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Hello Bryan,

Thanks for the info! I have seen this device when looked for hot-swappable
enclosures. But the problem is that we are going to use RAID5 on 8 discs
with 3ware Escalade 7810. Are those bays

Do you know what technology do they use to provide hot swap in the server
you mentioned? Can it be used somehow with other IDE RAID controllers? Can
those enclosures be purchased separately?

Thanks a lot,
Alex


On Sun, 16 Sep 2001, 13:18 -0400, Bryan Taylor wrote:

> Alex,
> 
>   No, you don't need to buy IDE backplanes for 3Ware IDE RAID controller.
> The IDE disk enclosure/tray from Synetic won't allow you to do hot-swap on
> the IDE drives anyway. Don't waste your money on it. Just mount the IDE
> drives directly in to your server's drive bays. They should work fine.
> 
>    If you really need hot-swap IDE drives, you might want to take a look
> at following website.
> 
>  http://www.rackmount.com/RackSvr/ColocationServer1125-IDE-RAID.htm
> 
>   The IDE Raid unit has a build-in IDE-to-IDE RAID-1 controller.  It
> doesn't need a RAID software driver for FreeBSD O.S.  Actually you can
> install any types of operating system on it using a standard IDE driver.
> (Operating system independent RAID system).
> Cool stuff!
> 
> Bryan Taylor
> P-Networks
> 
> 
> On Mon, 10 Sep 2001, Alexey Koptsevich wrote:
> 
> >
> > Hello,
> >
> > We are buying 3ware 7810 IDE RAID controller (supports hot-swap) and
> > thinking now about disk enclosures. There are some on the market (e.g.,
> > backplane http://www.synetic.net/Synetic-Products/2-to-3-IDE.html) but I
> > wonder do we need them? As far as I understand, some power switching is
> > necessary for hot swap, but do backplanes provide any advantage against
> > simple mobile racks with disk power switcher? Also, the backplane cited
> > above has two power connectors, are they necessary for hot-swappable power
> > supplies or not?
> >
> > Thanks a lot,
> > Alex
> >
> > PS Please cc: me your reply.
> >
> >
> >
> > To Unsubscribe: send mail to majordomo@FreeBSD.org
> > with "unsubscribe freebsd-scsi" in the body of the message
> >
> 
> 


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