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RAID 0

Luke32800
By Luke32800
in Storage Devices
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Posted

What are the chances of one of my drives failing?

Dunno. Manufacturers don't exactly advertise it . . .

I think however, if you get another HDD double the capacity, you can partition it and use it in RAID 10, which is a lot safer. Not sure about that exactly.

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The reason that i am asking is because i ran a benchmark on "userbenchmark.com" and this is what it said for the boot drive:

"The boot partition is located on a drive which is memory cached (e.g. Samsung RAPID) or in a striped RAID configuration. Memory cached drives expose the system to additional risk in the event of a power failure. Unless the system has a battery or UPS, RAM caching should be disabled on the system drive."

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The reason that i am asking is because i ran a benchmark on "userbenchmark.com" and this is what it said for the boot drive:

"The boot partition is located on a drive which is memory cached (e.g. Samsung RAPID) or in a striped RAID configuration. Memory cached drives expose the system to additional risk in the event of a power failure. Unless the system has a battery or UPS, RAM caching should be disabled on the system drive."

So, is your boot drive in a RAID 0 configuration? 

 

In general, it's best to have your OS on a single drive if you can, it lowers the risk of losing data compared to RAID 0. 

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Dunno. Manufacturers don't exactly advertise it . . .

I think however, if you get another HDD double the capacity, you can partition it and use it in RAID 10, which is a lot safer. Not sure about that exactly.

Not sure about that. Considering RAID 10 requires 4 drives to operate. Even having two drives with partitions defeats the point of having RAID 10, as you're either going to be sacrificing the speed or redundancy. 

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yes i have 2 drives in raid 0.

Then yeah, it's more risky than having it on a single drive. 

 

Modern drives' failure rates are pretty low, though, so it's not something I'd worry about too much. Just make sure you back up data you can't reinstall or download. 

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what would be the best way to set up my drives for speed and safety?

Depends on the drives you have. If you just have the drives that are in RAID 0, I'd just leave it as it is and backup important things to an external drive. 

 

If you have an SSD, put the OS on that and have HDDs as mass storage. 

 

Bear in mind you can have issues moving from a RAID 0 array to single drive for the OS. I've tried it before and it didn't work, so you may have to reinstall. 

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is it possible to back up to a sd/micro sd card if the size is big enough?

 

SD cards are usually FAT32. If you have files larger than 4GB, you won't be able to copy them.

 

I would recommend using a hard drive instead if possible.

 

As for RAID0, it is riskier (The risk goes up with how many drives you use) and if one drive goes down, the whole array goes down (Even if you unplugged one of the drives by accident...as soon as you boot, goodbye array). It's only worth it if you have the drives backed up and really need the speed.

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~snip~

 

Hey there Luke32800,
 
The guys gave you some really good explanation. Here are my two cents on this:
RAID0 offers a good increase in speeds that is relevant only in certain types of usage. Sequential read/write speeds and greatly improved but random read/write speeds hardly gain anything. 
On the hazard side of things RAID0 is as dangerous as drive failure goes. The problem with this type of array is that ot offers absolutely no redundancy whatsoever. If one drive of the array gets dropped fom it you'd lose all info on the whole array. Dropping a drive may occur due to drive failure, misalignment, synchronization issues or simple damage. This is why the risk of losing data with RAID0 increases a lot with every drive added to the array.
As long as you keep backups and use NAS/RAID-class drives you shouldn't be worrying that much for your data's safety. :)
 
Captain_WD.

If this helped you, like and choose it as best answer - you might help someone else with the same issue. ^_^
WDC Representative, http://www.wdc.com/ 

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