RE: Recommendations for a “real RAID" 1 card on Centos box

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> I would'nt bother with a 3ware 8000 or a 3ware 9000 card these days, if
> you really do want to get 3ware, get atleast a 9650. And anything less
> than a 9550 should be considered only if you get a really good deal off
> ebay. And remember that battery backup unit.

I'm just really looking for a RAID card that will do RAID 1, with four drive capacity, i.e.,
a master drive with the OS and applications installed and mirrored, and a slave drive for data and
photos, graphic design, video, etc also mirrored.  What would battery built into a RAID card 
do for me? 

>>> For me, in SATA RAID cards it's 3ware or nothing. Been using them for
>>> more than 8 years now.
> 
> I used to think the same for a long time, till I started using Areca
> raid cards. Now, I rate 3ware well behind Areca on performance,
> reliability and ease of use. If you are doing raid-5 or raid-6 the
> performance difference is quite noticeable ( I've just recently switched
> my desktop from a 3ware 9650 to Areca 1220, and got a near 8%
> improvement in write performance, and 12% on read - raid5 5 spindles ).

So you reccomend Areca, good thanks I'll check them out too.  How are they for RAID 1?

>> So these cards are just plug n play?  Just plug them in, no software or drivers required, 
>> all mirroring is managed by firmware built into the card RAID card itself?
> 
> Drivers for both 3ware and Areca are included in the CentOS-5.1 kernels.
> 
> Btw, you might want to keep an eye on some of the not-that-expensive
> highpoint rocketraid, hey have some fairly decent stuff coming out these
> days. The issues with them however, the drivers have only recently gone
> into the mainline upstream kernel - and their userland tools are not
> quite there yet. But if you need something for 2 to 5 drivers, they are
> an option worth considering ( they do have drivers for centos-4 and
> centos-5 on their website ).

Will check them out too Thanks Karanbir

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