Re: how does raid work

["Jason Lee" <jasonjlee@xxxxxxx>]

Some motherboards carry ide raid solutions.

Abit bd7 raid uses highpoint controller chips.

The other main ide raid chipset is from promise (around longer back into ata33 days!)

My main dev machine runs 2 striped drives for speed.

The server runs fastrack 66 in mirror config.

All the cheap ide raid cards only have raid 0 , 1 and 0+1

0 is stripe
1 is mirror
0 +1 is a striped pair, thats also mirrored to another two drives.
oh, and jbod, but thats just all the drives appearing as 1 big drive.

There are other levels of raid such as 5 are not supported on such systems.=

Checkout www.storagereview.com for lots more info.

Jason



----- Original Message -----
From: "David Sussman" <davids@xxxxxxx>
To: <ukha_d@xxxxxxx>
Sent: Wednesday, June 05, 2002 5:44 PM
Subject: Re: [ukha_d] how does raid work


I bought the InnoVision AP-1680 IDE raid controller last week, along with two 40Gb drives. This card supports RAIR:

0 - striping
1 - mirroring
0+1 - striped/mirror (if you have four drives)

Installed perfectly into W2k server, and is now running my new firewall and=
Exchange Server. A very cheap solution (the card is only =A320), and easy t= o
install and setup.

d


"Mark Marooth" <MMarooth@xxxxxxx> wrote in message news:<6553BCF3E25DD2118F0A00AA00AE6AAA450541@tigger>...
>
>
> There are a bunch of IDE cards out there that will give you Hardware > Mirroring/RAID facilities as time and SWMBO will permit.  Check o= ut SCAN
> under
> Hard Drives for a list of cards.
>
> Hardware Mirroring/RAID tends to be substantially faster than doing th= e
> same in
> software !
>
>
> Hope this helps,
>
>
> Mark
>
>
>
>
>
>
> --------+------------------------>
>             &= nbsp;     "Amar Nagi"  
>             &= nbsp;     <amar@xxxxxxx >             &= nbsp;     com>      &n= bsp;  
>             &= nbsp;           &nbs= p;      
>             &= nbsp;     05/06/2002   
>             &= nbsp;     15:59      &nbs= p; 
>             &= nbsp;     Please respond
>             &= nbsp;     to ukha_d    
>             &= nbsp;           &nbs= p;      
> --------+------------------------>
>
> >------------------------------------------------------------------= -----
> -----
>  
>
>         To:    = ; ukha_d@xxxxxxx >
>         cc:    = ; (bcc: Mark Marooth/SCOTIA)
>
>         Subject:   =   RE: [ukha_d] how does raid work
>
>
> >------------------------------------------------------------------= -----
> -----
>
>
>
>
> Thanks mark
>
> The second does sound ideal and simple.
>
>
>
>
>
>            ----= -Original Message-----
>
>            From= : Mark Harrison [mailto:Mark.Harrison@xxxxxxx]
>
>            Sent= : Wed 05/06/2002 15:55
>
>            To: = ukha_d@xxxxxxx >
>            Cc:<= BR> >
>            Subj= ect: RE: [ukha_d] how does raid work
>
>
>
>
>
>
>
>            Amar= ,
>
>
>
>            With= only two drives, you have two options:
>
>
>
>            1: M= irroring - set up your Operating System so it copies
> everything
> onto both as it goes along.
>
>
>
>            2: A= utomated copy-over of data - set up a recurring task so
> it copies
> your DATA directories over to another drive (maybe in another PC) once= a
> day.
>
>
>
>            Pers= onally, I do the second....
>
>
>
>            Mark=
>
>
>
>            ----= ----
>
>
>
>
>
>
>
>            afte= r a hardrive that nearly cost me all my data over the
> weekend
>
>
>
>            i am= looking at have a fail safe system (well something close
> to
> faile ssafe)
>
>
>
>            back= ing up a 60gig is not an option so i looking at getting
> tow 60gig
> drives
>
>
>
>            and = replicating one to other. Any help how to acheive this -
> i have
> hear raid being mentioned
>
>
>
>            a fe= w times.
>
>
>
>
>
>
>
>
>
>            For = more information: http://www.aut= omatedhome.co.uk
> <http://www.automatedhom= e.co.uk>
>
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