[CentOS] Recommendations for a "real RAID" 1 card on Centos box

[Ross S. W. Walker]

Therese Trudeau wrote:
> > Date: Fri, 14 Mar 2008 10:33:29 -0400
> > 
> > 
> >> You are definitely making your life more difficult then is 
> >> needed for a desktop machine.
> >> 
> >> You said you have 4 hard disks. Make a software RAID1 out 
> >> of the first two. Make a software RAID1 out of the second two 
> >> and your good to go.
> >> 
> >> You can use dump/restore to backup the logical volumes on 
> >> the second
> >> RAID set to an LV on the first.
> >> 
> >> No need for bare metal restore. Just need to get some 
> >> working Linux distro to be able to read your files.
> >> 
> >> Going HW RAID for your desktop is going to get in the way 
> >> of you getting things going and if your HW RAID card fails 
> >> then what? Your drives will only work with another identical 
> >> HW RAID card.
> >> 
> >> -Ross
> > 
> > That makes total sense Ross, I think I may end up going 
> > with software raid and investing in a good hot swap redundant 
> > power supply
> > that would fit into an ATX case, combined with a good UPS.
> > 
> > That brings up a last question on possiblity of either a 
> > 3ware or acrea RAID 1 cards.  I'm wondering how long I would 
> > be able to order
> > a replacement RAID card from either of 3ware or areea.  
> > Anyone know if 3ware or acrea stock identical replacement 
> > cards for their SATA 4 port raid cards
> > for several years out?  Do they stock past the three year 
> > warranty period?
> 
> ACTUALLY I totally forgot.  I absoluteluy can not use 
> software raid.  Because I use Adobe products.  Adobe products 
> do not install
> well on software raid systems, and tend to crash on software 
> raid beacuse of their activation process.  If I go raid, I 
> absolutely need a hardware raid
> which is entirely transparent to the operating system, at 
> least as far as adobe products are concerned.

What Adobe products do you use under Linux? I did not know
that Adobe offered products outside of Reader and Flash
for Linux.

Besides, where did you read that Adobe products don't
work on RAID systems?

The RAID part will be well hidden under the Logical Volume
Manager even if the first is true.

RAID1 can speed up sequential read speed, as a well
designed RAID implementation can stripe the read requests
across both spindles (and dm-raid does that!).

-Ross

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