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RAID0-like combined capacity, but without striping? - Page 2

post #11 of 16
Thread Starter 
Quote:
Originally Posted by Darren9 View Post
This, your in the same boat all ways really, you lose it all at once with raid0 or half one day and the other half later with a single drives or a span (I'm guessing you can recover half of a span).
So wait, am I correct in understanding that if 1 drive dies in a JBOD span, everything on the other drive is still safe? Because that would be perfectly fine with me; that's just like two normal drives without spanning.

Quote:
Originally Posted by Lord Xeb View Post
What you are refering to doesn't even exist. To have fault tolarance there must be 1 or more drives that are used for as such. The simplelist is RAID1 or for performance and security is RAID10... so yeah. To gain a bunch of disk together WITH redundancy like JBOD isn't going to happen. Where is the redundant data going to be stored? There is no parity so that won't work etiher.
Quote:
Originally Posted by Guswut View Post
With how cheap 2TB drives are, I'd suggest setting up a RAID1 array. If you need more than 2TB of space, but two more disks and set up a RAID10 array.

If you really cannot afford the additional cost, and require that much space, it would be most logical to just keep the disks split, and use good partitioning practice (although, honestly, I'd suggest getting a small SSD [120-250GB] or decently speedy HDD for the OS) to keep your data rational.
I physically don't have the space in my case for another 4 drives. I can get two more in, at most, or 3 if I remove my 500GB drive.

As for SSDs, I've got two that I will have in RAID0 for my OS.
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post #12 of 16
Quote:
Originally Posted by [Adz] View Post
...[snip]...

As for SSDs, I've got two that I will have in RAID0 for my OS.
Umm, is having SSDs in RAID0 really worth it? I never got any speed benefit, but it's all bragging rights, I guess.
post #13 of 16
Hasn't happened yet. They're probably looking for a way. You could have it that there's RAID 1 on two drives so both drives have the data but since the whole drive has the whole set of the data, both drives can take 1/2 of that data and send it which would be quicker.
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post #14 of 16
Quote:
Originally Posted by [Adz] View Post
So wait, am I correct in understanding that if 1 drive dies in a JBOD span, everything on the other drive is still safe? Because that would be perfectly fine with me; that's just like two normal drives without spanning.
According to this: http://www.pcguide.com/ref/hdd/perf/...evels/jbod.htm
data loss on both drives is still possible.

Here's my experience: I've been doing RAID 0 for several months. I still haven't had any problems. It's a risk for sure, considering the data is liable to be lost. However, I use a backup on my mission critical data.

If you had a backup you might not have to worry about losing data from a JBOD span. But that also requires other hard drives...
    
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post #15 of 16
Thread Starter 
Quote:
Originally Posted by t0adphr0g View Post
Umm, is having SSDs in RAID0 really worth it? I never got any speed benefit, but it's all bragging rights, I guess.
It's more to do with the additional capacity. Because it's only an OS drive, I can afford the risk of losing data on that; I just have to reinstall or recover from an image of it if anything goes wrong.

Quote:
Originally Posted by Jitsan View Post
According to this: http://www.pcguide.com/ref/hdd/perf/...evels/jbod.htm
data loss on both drives is still possible.

Here's my experience: I've been doing RAID 0 for several months. I still haven't had any problems. It's a risk for sure, considering the data is liable to be lost. However, I use a backup on my mission critical data.

If you had a backup you might not have to worry about losing data from a JBOD span. But that also requires other hard drives...
If I were to get another pair of drives to use as backup, I'd have to keep them external, which would be inefficient because if I had them internal I could have used RAID10.

I'm kinda being put off JBOD by the uncertainty. Some people are saying that you could lose data on both drives if one fails, others are saying that files are written to the first drive until it's full and then to the second so if one fails, the other is still intact.

Quote:
Originally Posted by Jaguarbamf View Post
How about Raid 5?
(will require at least 3 hdd's though)
That looks like the route I'll be taking to be honest. Lose the 500GB hard drive and put a third 2TB drive in there.

Could anyone clarify how I would recover a RAID5 array if a single drive dies? I know that when 1 drive dies, the system can still function, albeit really slowly as it has to calculate from the parity data, but if I just plug a replacement drive into the same port on the motherboard, will it automatically start using that, or is there a process to recovering it?
Controller would be an Intel ICH10R, built in on the EP45T-USB3P motherboard.
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post #16 of 16
Run RAID1 with 2 disks.
Run RAID5 with 3 or more disks.
Run RAID10 with 4 disks.

Personally I have a RAID0 setup for my OS. With nightly backups of the RAID0 array being backed up to my RAID5 array.

So I have 2 750gb drives in RAID0, and 5 1.5tb drives in RAID5. My RAID5 array has 2 drives in hotswap so if any 1 drive in the raid5 array were to die at the same time I would be ok, as long as another one doesn't die while it's resyncing the data.
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