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SSDs and Trim Possibly a stupid Q

B

brotj7

Senior member
Prices are dropping and I am probably going to be able to reason with my wife to get a few 512GB Crucial M4. I know trim does not work with raid zero, but what about raid one at the OS level?

My intent is:

C: mirrored M4 512gb
D mirrored Samsung F4 2tb

If I cant run an active mirror with trim enabled:

Is there a benefit to either
A. Clone
B. Install the mirror, then unplug one drive to keep as a hotspare?

I'm going to be traveling next fall, and my wife needs this for classes. I just can't have this machine down due to a driver hicchup, or something stupid. We have plenty of thumb drives, and spare machines around the house for her to keep multiple copies of documents she is working on, but she has medical software and only gets one license.
 
Software raid yes. But software raid is horrible.

But raid1 aint a backup, nor does it protect against data corruption.

Raid is used for avalibility. Not for protection.
 
"Raid is used for avalibility. Not for protection."

Understood. This is my goal for this system.

"Software raid yes. But software raid is horrible"

My mobo says its 2x SATA 3 supports raid 0/1, and the 4x SATA 2 supports sata2 0/1/01/5, without a discrete card this is software raid right?
 
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Simplicity. I would rather only have to purchase the drives once vs upgrading when I run out of space with a smaller SSD.

We did get Z77 motherboards so I think it should work, but I'd rather not set myself up to forget something if there is a failure when I'm gone and I have to talk my wife through a HD failure over the phone.

Also I think I read the SSD cache benefit is workload dependant right???
 
brotj7 said:
My mobo says its 2x SATA 3 supports raid 0/1, and the 4x SATA 2 supports sata2 0/1/01/5, without a discrete card this is software raid right?
Click to expand...

using the motherboard is a type of software raid. Sometimes refered to as firmware raid. It generally does not pass along the trim command though.

Though if really worried about trim commands, just get a SSD that has good garbage collection so it will take care of it self during idle times without a trim command being sent to the drive.
 
brotj7 said:
but I'd rather not set myself up to forget something if there is a failure when I'm gone and I have to talk my wife through a HD failure over the phone.

Also I think I read the SSD cache benefit is workload dependant right???
Click to expand...

For the SSD caching, just use the lower mode so that if something happens with the ssd / drivers / cables, the data is still intact.

for the second, it helps with the workload is with common files, but then so does getting a large ssd. The advantage of ssd caching is that you can have very large full drives so only one drive letter, making it more affordable for performance and space.
 
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