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RAID 0 setup with WD 640GB
- Thread starter CoolGuy90
- Start date
Well, you'd have to save off the current disk contents and reload onto the raid0. Performance depends on what is implementing the raid0. It's hard to say generally, but roughly 2X? I'd be scare to stripe two disks though, unless I didn't scare about the system - if either dies you're hosed. On the other hand, a raid1 often gives you close to 2X the read speed (depending on how the HW works...)
Well, you'd have to save off the current disk contents and reload onto the raid0. Performance depends on what is implementing the raid0. It's hard to say generally, but roughly 2X? I'd be scare to stripe two disks though, unless I didn't scare about the system - if either dies you're hosed. On the other hand, a raid1 often gives you close to 2X the read speed (depending on how the HW works...)
I'm not too familiar with RAID but what is the difference between the two?
drescherjm
[H]F Junkie
- Joined
- Nov 19, 2008
- Messages
- 14,933
Would putting another WD 640GB Black in RAID 0 provide a noticeable decrease in boot and loading times and what read and write times should I expect?
Sometimes it helps, sometimes not as much. Remember that RAID0 mostly helps STR (large sequential reads and writes) but not as much with the access times. I mean you can read a 200 MB file in 1 second instead of 2 with the raid but a 4 KB file read/write time will not be cut in half. And remember in most desktop applications a 4KB read /write will happen way more often than the large file read in one go. This is why the market is moving to SSDs. Any current generation SSD will read that 4KB file around 50 times as fast as the hard drive RAID0.
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I'm not too familiar with RAID but what is the difference between the two?
raid0 is striping. improved performance, but because the data is striped across both drives, if either dies, you're screwed. raid1 is a mirror - you can lose either drive and still okay. some raid1 implementations give improved read speed because they can alternate between the drives.