I am replacing my old hard drive and i want to buy two 250GB and make them work as one. Should I use a RAID 0 or a RAID 1 system thanks?
You do know the shortcomings of each approach, right?
Under RAID 0, you would get 1 drive that has 500 GB, but there are some issues like reliability that if one drive goes down then you may be hosed as this has been talked about before in terms of having some shortcomings.
Under RAID 1, you'd have as much space as just 1 drive so that the second is a mirror or backup drive. Thus you don't really have any extra room on that second drive that you can use.
Link to more information about RAID. I'd likely think about having 2 drives and setting them up as 2 drives, but that's me.
Regards,
JB
When considering setting up a Raid formation you need to consider the fact that your HDD is the hardest working part of your computer, and they often fail while still under warranty. Unless you want to use 500 Gig of HDD there is an option to split 2 identical 250 HDD's in half and run both Raid 0 and 1 or just run Raid 1, as I do and forget about any dramas of lost data if a HDD crashes. Raid 0 will make your system run faster as both HDD's are working together but Raid 1 (mirroring) gives you peace of mind regarding HDD crashes. It is your decision,a Speed boost using Raid 0 or peace of mind using Raid 1
If your motherboard is based on the intel 925, 945, 955, or 975 chipset and you're getting SATA drives, you should have Intel MatrixRaid. With MatrixRaid, you can run both Raid 0 and 1 on just two drives.
I've got the first 40gb of my two 160s mirrored (raid 1) for data protection. The mirror (C:) holds is the boot device, and stores the OS, apps, My Documents, etc.). The remaining 100gb or so is striped (raid 0). D: stores the page file, temp folder, game files, dvd/cd rips, web browser cache, downloaded stuff, etc... anything that I don't care if its lost or i want fast read performance.
With raid 1 as there are two harddrives to read from you get a significant read speed boost as your computer can read different data simultaneousely. Write speed is relatively unnafected as the same data has to go to each drive.
Over the 10+ past years we have built hundreds/thousands of PC/Servers. Only the best PC systems and all Servers used RAID setups. I, personally, run RAID0 and have for years..........I'm seriously contemplating going with a single large drive in a future system for these reasons:
2 harddrives doubles your odds of drive failure
In RAID0, the system is faster as both drives work as one..............however, then you need a 3rd drive for backup (now you have 3 drives that can go bad)
In RAID 1 the second drive is a copy of the first and you actually don't gain much performance
Less hard drives equal less system heat, less voltage requirements, less chance of failure, less noise, less cooling, etc.
The new drives are fast and quiet and not much slower than RAID0 setups (not enough to make a difference except in one case):
Using WD Raptor Drives (10,000) in RAID setup can and will speed up your performance a good 33% if the REST of your system is designed for speed also (the only option I would consider)..expensive, but the best/fastest is never cheap
I could go on but I think you get the idea....the new big hard drives have a fast seek/read/write time, gobs of cache (8MB/16MB0 are huge (hundreds of Gigs) and really aren't necessary to be setup in a RAID configuration for a high performance system. If you want fast, get the 150G WD Raptor (10,000rpm, 16MB cache), set two up in RAID0 and use a third for backup....that would be screamingly fast...............
Why did you need 500G of HDD space? That's a tremendous amount when you could use a separate tower for storage(server) and use your new PC as a workstation......................
Your post is so full of fail it's hard to decide where to begin.
First you say "2 harddrives doubles your odds of drive failure"
Then you explain how you're wrong when considering raid 1.
Then you say "you actually don't gain much performance" in Raid 1 when in fact you nearly double your read speeds, which is the most common hard drive operation.
Then you say "less drives equal less chance of failure" (try 'fewer' next time) as though you've completely forgotten about raid 1, which *HALVES* the risk of failure with 2 drives.
Then suddenly you think you need to get 10k drives to make raid worth it, when you have already stated the obvious: Raid can make your system fault-tolerant AND speed it up.
"I could go on but I think you get the idea..."
Oh yeah, I think we get the idea.
"you could use a separate tower for storage"
Here's a tip: No professionals use the word "tower" for computer. A tower is a building. The only people that call computers "towers" are housewives and grandparents.
'Bout 5 minutes.
If you want a single 500GB drive, use RAID0.
If you want dual copies of the same 250GB, use RAID1.
The question you need to ask yourself is if you want additional data security or just speed.
If you don't care about your data being safe at all times, and have no real reason for using a single 500GB drive (I can't think of anything), then RAID might be pretty much useless, as you'll most probably just suffer a performance decrease during write operations, while reading might be accelerated slightly.
Real advantages of the RAID system do not really manifest themselves before RAID5, and that requires 4 disks. Even then I'd mostly recommend it for people with mission-critical data they can't realistically duplicate onto other media (CDs/DVDs/tapes) or need constant access to.
Performance issues won't suffer using RAID0 and only two drives....using RAID1 will cause some loss since one is copying the other at all times........security-wise RAID0 be backed up on a third hard drive....the question is: is it worth the expense of having a third drive...as I stated previously, unless using the Raptor drives in a standard PC, there isn't much to gain with todays large, high speed, single use drives that are available...........advantages of RAID do manifest before RAID5 or there would be of very little use for those configurations..................Until the new, big, fast single use drives came out, RAID 0 or RAID1 was very commonplace in any fast system that was quality built...............there are plenty of reasons to use huge hard drives nowadays with all the music/video/etc being saved/edited/etc. and plenty of reason for big CPU's, plenty of fast RAM and super fast/large HDDS.............
Unless you are deeply concerned about speed and/or reliability, two seperate drives isnt so bad, its just the one extra drive letter and while there is no redundancy in doing this, there isnt any in RAID 0 either. If you really dont want to have the extra drive letter to mess about with when storing data, depending on your OS, JBOD may be a viable alternative.
JBOD in the opposite way to partitioning, using several smaller disks to make a larger disk.
Personally i would just use the 2 drives as just that, two separate drives with two separate drive letters in windows.
I have raidO plus 1. Three drives required. It is quick with large files and has redundancy. but it isnt that cheap. I have had raid since it was out 20 years ago and have never had a data loss problem. Part of responsible computer ownership and operations is good data backups whatever type of setup you have. Anyone that does not think raid 0 is faster than a single drive setup needs to do some benchmark test. On smaller files not much diff. Try editing with photoshop. you will see a difference in perf.
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