Recommendation for drive controller that supports TRIM

[BoomerNation]

Hello good folks!

I am about to dive into the unraid world and I have a couple of questions with regards to TRIM etc that I would really appreciate your help with answering. I have 8 x 8TB spinning drives that will be my main storage. These are connected directly to mobo. I also have about 16 Intel S3710 800gb. Have ordered a 16 bay SSD cage for these. I was thinking of splitting these drives in 2 with 8 used for cache and 8 used for games.

My questions are as follows:

 

1. Which 16i HBA's support TRIM under unraid? I seem to have a hard time finding out exactly what is needed.

 

2. Do my ssds support TRIM under unraid (I read there were a couple of different ways of implementing TRIM, namely DRAT/DZAT)?

 

3. Anything else I need to think of in this regards such as which fs to use? Or with regards to anything else? I appreciate all input and support and pardon me if this has been answered before but I have tried to look for answers myself without it making me any wiser.

 

Edited November 14, 2021 by BoomerNation

[JorgeB]

15 hours ago, BoomerNation said:

Which 16i HBA's support TRIM under unraid?

LSI 93xx HBAs support trim, but only on devices with deterministic trim support.

 

15 hours ago, BoomerNation said:

Do my ssds support TRIM under unraid (I read there were a couple of different ways of implementing TRIM, namely DRAT/DZAT)?

You can check that yourself:

https://forums.unraid.net/topic/74493-samsung-ssd-hba-trim/?do=findComment&comment=713011

 

[BoomerNation]

1 hour ago, JorgeB said:

LSI 93xx HBAs support trim, but only on devices with deterministic trim support.

 

You can check that yourself:

https://forums.unraid.net/topic/74493-samsung-ssd-hba-trim/?do=findComment&comment=713011

 

Thanks for your reply and help. So is 9300 the only card to support TRIM in Unraid, ie. 9400 does not?

 

Thanks for that post. I don't have any spare ports on my mobo at the moment, so I might have to check this on another sever/computer. But there is no quick and easy overview saying which drives have deterministic trim support? Edit: found these 2 pages which seems to indicate that my drives do indeed support it: https://www.truenas.com/community/threads/ssd-dying.95907/

 

Deterministic read ZEROs after TRIM will do right? https://www.thomas-krenn.com/de/wiki/Intel_DC_S3710_Series_SSDs

Edited November 15, 2021 by BoomerNation

[JorgeB]

54 minutes ago, BoomerNation said:

ie. 9400 does not?

I would expect it does, but don't have one to confirm nor do I remember someone else confirming it.

 

55 minutes ago, BoomerNation said:

Edit: found these 2 pages which seems to indicate that my drives do indeed support it:

Looks like it.

[BoomerNation]

Again, thanks for taking the time to help out. I think I might just have to bite the bullet and buy the fossil 9300-16. The return process will be too expensive if the 9400-16i doesn't support it so unless someone else confirms compatibility, I'm not going to take the chance.