RE: Re: SATA, eSATA, Port Multiplying and RAID

["Phil Harris" <phil@xxxxxxxxxxx>]

OK - You can't port multiply on just "any" SATA or eSATA
port - you need a
controller than is capable of port multiplying and then at the other end
you
need a corresponding port "de-multiplier".

Take a look at:

http://www.span.com/catalog/product_info.php?cPath=24_1701_1702&products_id=
7579

or

http://www.span.com/catalog/product_info.php?cPath=24_1701_1702&products_id=
7581

(there are other, cheaper cards on there too that support port multiplier
enabled connections)

and then something like:

http://www.span.com/catalog/product_info.php?products_id=15709

on the other end.

Phil




> -----Original Message-----
> From: ukha_d@xxxxxxx [mailto:ukha_d@xxxxxxx] On Behalf
> Of noughtomate
> Sent: 09 June 2008 11:15
> To: ukha_d@xxxxxxx
> Subject: [ukha_d] Re: SATA, eSATA, Port Multiplying and RAID
>
> Pretty please with a cherry on top!
>
> --- In ukha_d@xxxxxxx, "noughtomate"
<balraj_jassal@...>
> wrote:
> >
> > Hi,
> >
> > I have various standalone USB and Firewire Hard drives lying
about
> > but now Node Zero has become abit of a mess, so I'm looking at a
> > rack mount chassis for my primary Media Server. This will be a
> > standalone rackmount PC which I'm quite comfortable with
building.
> >
> > However, I want to build it for growth and need to consider a
> > seperate multi Drive rack to sit alongside it sometime in the
> > future. I've been inspired by this Silverstone DS351 kit
> > (http://tinyurl.com/4dt5uj with a good
Video  review [7 mins] here
> > http://www.youtube.com/watch?v=4Ie6iRXCKGA).
> >
> > The problem with this device however is that it requires the
> > controlling PC motherboard to have a Sil3132 Chip set, which my
> > motherboard doesn't support.
> > Sure, I can upgrade my motherboard in the future, but it begs the
> > questions - how is SATA meant to be muliplied ?
> >
> > I read many moons ago that as great as SATA is for throughput, it
> > does not lend itself well to port multiplying and normally should
> be
> > use in a 1 physicial interface : 1 HDD arrangement (correct me if
> > I'm wrong).  Recently, I've been reading about something called
> SATA
> > Backpanes which confused me further and it just made me think how
> I
> > could build my own HDD Chassis.
> >
> > So my questions :
> >  - How is SATA meant to be used ? Can a single motherboard
> > connection (whether SATA or eSATA) control multiple Hard drives ?
> >
> >  - Although eSATA is external, how is it different from SATA ?
Can
> > what what I do with SATA be done with eSATA ? (Aside from power
> > requirements)
> >
> >  - If I wanted to build a HDD server to be connected to my PC's
> > eSATA connector, what kind of board do I need ? Is there any such
> > thing as a standalone PCB (which fits ATX/MicroATX/MiniATX etc..
> > size) which can perform the backpane / port multiplying / RAID
> > function ?
> >
> > - Does any form port propogation allow for varying size /
> > manufacture disks in a JBOD configuration ? The emphasis seems to
> be
> > RAID which I expect would require identical disks.
> >
> > - Do any of my above questions have to be chipset dependent ?
> >
> > Yes I am confused!
> > Any advice would be much appreciated.
> >
> > Thanks
> >
>
>
>
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__________ Information from ESET NOD32 Antivirus, version of virus
signature
database 3167 (20080609) __________

The message was checked by ESET NOD32 Antivirus.

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