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3 drives and raiding 2 question

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O-P-M

Gawd
Joined
Apr 7, 2005
Messages
822
I have a Seagate 80GB and I was planning on buying 2 200GB spinpoints, for my mp3's, video ISO's and everything else. Can I raid the 2 and still leave the Seagate the way it is? Also, what raid do you guys think is the best, 0 or 1? Or, should I just leave it all the way it is?
 
You can put the 200 gb hdd'd in raid and leave the 80 gb drive to run you OS and programs. This is what i would do.

RAID 0 is for an increase in speed (faster accessing data is split between drives) and no loss of storage (raid 0 with 2 200gb hdds makes computer see it as a 400 gb drive). You lose one drive, the entire data on both drives is lost.

RAID 1 (mirroring) is for protecting against lost data (raid 1 with 2 200gb hdds makes computer see them as 1 200gb hdd, the other is a mirror image). If one harddrive is lost you still have a copy of all you data. There is a slight deicreas in performance because it has to write to both drives at once, but it is not too noticeable.

If you do not put them in a raid configuration, it would be just like having 2 hdd, just no increase of speed (when compared to RAID 0) or no backup (when compared to RAID 1). Not sure what you should do, depends on the situation. Do you want to increase speed, or help protect data, or is it just because you see other people have it?

EDIT: After rereading your post I would want my setup to have the 2 200gb hdd in RAID 1 because i would hate losing all my music and movies. But that is just me. (Note this would then cause your 2 200gb hdds to be just seen as 200gb. So you kind of lose some space, but I would think it is worth it.)
 
likely a good idea

Id ask how you where going to RAID
with a card, with dedicated onboard channels or with software

the thing is, you wouldnt want RAID0 for storage, no point to it you dont need the added performance
and youd have 50% effciency with RAID1 and the mobo would need to have dedicated controller for that or youd need to get a card, in either event there would likely be a small CPU overhead

and if you where to employ a parity RAID level (RAID5 or 3) youd need a card and at least 3 drives (the effciency increases with the number of drives, the formula being an additive of all the drive minus one.) plus you might get CPU overhead depending on what card you got

and software RAID (dynamic disks) has considerable CPU overhead as well as recovery considerations and a whole new set of rules to learn

these days, with DVDs so cheap, maintaing a backup library isnt all that tough if you keep on top of it, and occassionally vefify the disks are still good. And RAID has never been a substitute for real backup, malware, data corruption, power events all will kill the data or the drives in one fell swoop

enterprise class storage can get away with imaging to multiple arrays on hardened systems in different physical locations on different power protection grids with a low probability of data loss, not quite as easy to replicate at the individual level
 
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