Raid 1 with SSD's - worth it?

Masumi

Commendable
Apr 27, 2016
6
0
1,510
Hello,

I am currently putting together a PC build for someone who isn't very prone to making backups, so he's definitely getting a RAID1 for his data drive.
Here's my current plan: http://pcpartpicker.com/p/kCxdjX

My question: Is it worth it to use SSD's for a RAID1?
Not only for the speed, but also because SSDs seem to have lower failure rates.

I have read around a bit, and saw some hints that SSD's will be slower in a RAID because of lacking TRIM support - but these articles are all a few years old, and I can't find any newer definitive info on the topic (not about RAID 1 anyway).

Also, in the manual for the motherboard (Gigabyte GA-Z170XP-SLI ATX LGA1151, http://, page 38), in the section about setting up RAID, it says

Before you begin, please prepare the following items:
• At least two SATA hard drives or M.2 SSDs (Note 1) (to ensure optimal performance, it is recommended that
you use two hard drives with identical model and capacity).
which kinda sounds like non-M.2 SSD are not supported anyway... but it's not stated explicitly.

So should I just go for 2x WD Blue HDD instead?
 

USAFRet

Titan
Moderator
1. RAID 1 is not a backup. It just means that BadThing happens on 2 drives at the same time.
Accidentally deleted that important file? Oops...its still gone.

2. There are MUCH easier and safer ways to manage actual backups.
An application like Macrium Reflect will do a full and differential drive image, on an automated schedule. Once set up, no user interaction needed.

3. See #1
 

USAFRet

Titan
Moderator


I have my system set to do a Full image of the C drive to another drive in this system every night at 2AM. Keep for 2 weeks.
Do a Full image of the C to another PC every Sunday at 3AM. Keep for 4 weeks.

All automated, I don't have think about it until I'd actually need to go back to a previous image.
For instance, if I got a particularly nasty virus that will not go away, I'd just boot from the Rescue DVD they recommend you make, and go back to an image from before the virus happened.

A RAID 1 does not provide that level of protection.
It helps in one and only one situation - a dead drive, and you actually need 24/7 operation.
 

Masumi

Commendable
Apr 27, 2016
6
0
1,510
Nice, I'll go for that then. I suppose a sufficiently big HDD for containing a number of images would be best for the backup drive?
Thank you!
 

USAFRet

Titan
Moderator


Yes. And, that tool does a little bit of compression on the image as well.
On my C drive, 106GB actual used space. A Full image of that is ~81GB.

It intelligently leaves off stuff like the hibernation file, page file, etc.