Solved Is RAID An Option?

Custom built pc / N/A
June 16, 2014 at 18:04:43
Specs: Windows 8.1 64 Bit, AMD FX-8350 8 Core @ 4.0 GHz - 2x4 DDR3-1600
Hey Everyone,

Just got a new hard drive for my computer. Previously I had a 500 GB solid state for OS and Programs, and a 500 GB HDD for movies, music, etc. I just got a 2 TB HDD, which I will now use for media storage. I figured I would just use the smaller HDD for backing up my main drive, but since they're the same size, I was wondering if I could set up a RAID 1 configuration with the two drives. I don't know if this is possible with two different types of hard drives, or whether it would significantly increase read speed or decrease write speed.


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June 16, 2014 at 22:53:12
I would expect this setup to significantly reduce the performance, both read and write, of your system.

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June 17, 2014 at 06:30:05
✔ Best Answer
RAID is not a backup method. It introduces redundancy so that if there is a disk failure there is no downtime in critical systems. If you need to ask about RAID, the chances are you don't need it and as ijack says, it will reduce performance as everything has to be written twice.

Relying on a RAID array does nothing for the data on the 2TB drive. You would be better just using the spare drive as a backup medium.

Bear in mind one of the unwritten rules of computing. While you have an adequate backup set, you will never need it. You will only ever need to recover from a disaster with a backup when you don't have one.


message edited by StuartS

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June 17, 2014 at 07:14:40
The purpose of RAID 1 is to allow continued access to your data in the event of a drive failure. Drive replacement can be deferred to a more convenient time. This is a big deal on a busy server. But on a home system it is usually more trouble and expense than it is worth.

The purpose of RAID 1 is NOT to protect your data. For that you need backups.

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June 17, 2014 at 09:23:55
Okay, thanks guys.

As for what Stuart said, I don't really care about the stuff on the 2 TB drive, mainly just the solid state that has all my programs and stuff.

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June 18, 2014 at 14:18:07
My point was not that RAID decreases performance (properly implemented RAID can perform much better than a single disk), but that creating a RAID array with an HDD and a SSD would reduce the performance to that of the HDD (or maybe a little better). You would be putting a brake on the SSD and losing the main advantage that you spent so much money on it for.

RAID can be a way to improve performance, but why bother when you can do so much better nowadays with a single SSD. It's an irrelevant technology nowadays for home users. But it still has a place in the corporate world where servers have to run 24/7.

message edited by ijack

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June 18, 2014 at 14:42:03
I use Acronis to run a backup of my system to another drive.

There are different methods of backing up an operating system, partitions or just folders of your choice but the end result is basically the same. It gives you a safe point to restore a system or folders of your choice.

Given that you were prepared to create a RAID array mirroring your operating system drive (meaning you would be using twice the amount of disk space of your entire operating system) you could probably afford to do occasional full backups of your system as opposed to incremental backups.

The backup process is a lot quicker than you would think and you can normally set a time for it to run while you are away from your PC.

There are some very good free alternatives to Acronis. Here is a good link to read:

message edited by btk1w1

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