hello,

 

i just recently switched to an SSD as the download disk (using snap and reiserfs).

 

is it possible to enable trim somehow in the fstab?

 

p1lot

Really a waste to use an SSD in unraid. Unraid is pretty slow and using an SSD isn't going to make it move any faster. I believe the file system is an old one.

i mainly use it because i got it almost for free and because it is silent and doesn't produce heat in the tiny hp microserver case. so why not use it if i already own it?

Here's something important to note...if I recall correctly, ReiserFS doesn't support background TRIM.  (Reiser4 & ext4 do BTW)  It may support offline TRIM, which is less dependent on the file system.

 

Here's an article that I used to get TRIM working under Ubuntu.  Essentially you have to edit your fstab file and enable "discard"...which equals TRIM in the Linux world.  I have no advice on how to do this unRAID....and whether this should be used with caution is up to you to figure out.  Personally, I don't think the performance benefits are worth it...but that's me.

 

http://www.howtogeek.com/62761/how-to-tweak-your-ssd-in-ubuntu-for-better-performance/

 

 

 

It would be effective as an APP drive and a SWAP drive.

 

For downloads or cache... I'm not sure I would waste the technology on it.

 

BTW, makes a great boot drive for XBMC!

Personally, I run an SSD for my cache drive.

If you are doing lots of read and writes at once, it really helps.

I am getting 99% of my gigabit speed write to my unRAID (cache).

I can copy files from multiple sources at once (I tend to) without as much overhead issue.

I can still get 100% performance  while doing file copies while the mover is running, that would normally bring a cache drive to  a crawl.

 

The kingston SSD Now V+ series will auto trim and garbage collection even without OS support for it. It firmware controlled self optimization.

I am not sure if the hyperx does this.

 

I also did not run out and buy and SSD for unraid. but since i had one collecting dust, i'll go ahead and toss it in my unRAID box and it increased my performance.

Personally, I feel that by the time i burn out my SSD, it will be obsolete to me. Running a high end gaming machine on an SSD will probably put as much if not more  stress on an SSD.

 

I void warranties for a living...

 

I really don't need a cache drive. I almost never copy files to the server from my workstation, most of the content comes from the interwebs. 

And when using 5GB RAM, a swap drive is kind of redundant. I guess using it as an App- and Downloaddrive is the smartest choice here.

The kingston SSD Now V+ series will auto trim and garbage collection even without OS support for it. It firmware controlled self optimization.

I am not sure if the hyperx does this.

 

Thanks for the heads up on this. I had not considered kingston until now.

Garbage collection is desirable if you want to use an SSD in unRAID.  (Or any other OS that doesn't support TRIM)

Does the predecessor SSD Now V without the plus have a garbage collection feature?

Does the predecessor SSD Now V without the plus have a garbage collection feature?

That was the Plus part. so no. sorry.

but i do keep seeing the v+ on sale

Garbage collection is desirable if you want to use an SSD in unRAID.  (Or any other OS that doesn't support TRIM)

 

I've read that ext4 supports trim.

if limetech adds ext4 support in the kernel and for the cache disk, then we may have trim support.