RAID question

Manauffeuer · 02-19-2008, 06:59 AM

hi every one
so far i understand raid is use to combine 2 HD's and make them into one with doubled the speed but can u use it as a regular HD in windows E.G. if i connect 2 Same HD's on a RAID port will it show up in my computer as i.e. 80 gb (40+40)?

**Cromewell** · 02-19-2008, 08:56 AM

It depends on the RAID level you use.

Have a read though RAID 101

[-0MEGA-] · 02-19-2008, 01:54 PM

Quote:

Originally Posted by Manauffeuer

hi every one
so far i understand raid is use to combine 2 HD's and make them into one with doubled the speed but can u use it as a regular HD in windows E.G. if i connect 2 Same HD's on a RAID port will it show up in my computer as i.e. 80 gb (40+40)?

Thats considered RAID0 (if you really consider that RAID). A true RAID setup has redundancy, which you really would't need unless you're running a server or if you just have important data.

SirKenin · 02-19-2008, 02:36 PM

And it isn't "double the speed" either. In fact, in most cases there's no speed improvement as well, although you do cut your MTBF (mean time between failures) in half...meaning the chance of failure is far greater, resulting in total loss of data.

Manauffeuer · 02-19-2008, 09:41 PM

thats not quite the anwser so if i put two 40g HD's in a raid when i go in my computer in XP it'll show up as a 80g?

TFT · 02-19-2008, 10:36 PM

Raid 1 with 2x40g hard drives will effectively mirror image what is on one drive onto the other so that if one HD fails then the other has all you need to carry on. Effectively you will have 40g total to use.

Raid 0 means you would have 2x40g equalling 80g as the data written is split between the two drives, but if one hard drive falls down then the other is completely useless. So no Operating System.

[-0MEGA-] · 02-19-2008, 10:56 PM

Quote:

Originally Posted by Manauffeuer

thats not quite the anwser so if i put two 40g HD's in a raid when i go in my computer in XP it'll show up as a 80g?

Yes if you put two similar 40GB hard drives in a RAID 0 array, then it will show up as a single 80GB hard drive in Windows.

02-19-2008, 06:59 AM	#1 (permalink)
Manauffeuer Bronze Member Join Date: Nov 2007 Posts: 38	RAID question hi every one so far i understand raid is use to combine 2 HD's and make them into one with doubled the speed but can u use it as a regular HD in windows E.G. if i connect 2 Same HD's on a RAID port will it show up in my computer as i.e. 80 gb (40+40)?

02-19-2008, 08:56 AM	#2 (permalink)
Cromewell Moderator Join Date: Dec 2004 Location: Canada Age: 26 Posts: 11,802	It depends on the RAID level you use. Have a read though RAID 101 __________________ You know what the chain of command is? It's the chain I go get and beat you with 'til ya understand who's in command here. www.userfriendly.org

02-19-2008, 10:36 PM	#6 (permalink)
TFT VIP Member Join Date: Oct 2006 Location: Yorkshire, UK Posts: 3,664	Raid 1 with 2x40g hard drives will effectively mirror image what is on one drive onto the other so that if one HD fails then the other has all you need to carry on. Effectively you will have 40g total to use. Raid 0 means you would have 2x40g equalling 80g as the data written is split between the two drives, but if one hard drive falls down then the other is completely useless. So no Operating System. __________________ Operator: Dave Operating System: XP Professional SP2 Processor: Intel E6750 Core Duo@3.20GHz Graphics: Nvidia 8500GT C: Drive 500GB D: Drive 200GB Memory: 2GB Monitor: 22" Widescreen ------------------------------------------------ Winner of Photo Tournament - Eerie, Dark, Creepy--etc.

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02-19-2008, 02:36 PM	#4 (permalink)
SirKenin banned Join Date: Aug 2006 Posts: 4,711	And it isn't "double the speed" either. In fact, in most cases there's no speed improvement as well, although you do cut your MTBF (mean time between failures) in half...meaning the chance of failure is far greater, resulting in total loss of data.

02-19-2008, 09:41 PM	#5 (permalink)
Manauffeuer Bronze Member Join Date: Nov 2007 Posts: 38	thats not quite the anwser so if i put two 40g HD's in a raid when i go in my computer in XP it'll show up as a 80g?