Advice on SSD trim/Discard XFS/brts.

[Bjur]

Hi.

I have in my array:

5 x HDD 3.5" XFS

 

1 cache SSD XFS and 1 unassigned SSD.

 

My questions are:

 

1. For the 2 x SSDs. Should I change system from XFS?

2. Should I install Trim plugin or use discard?

3. Is XFS a good system for all the disks?

[JorgeB]

Unraid already includes TRIM scheduler for all supported filesystems, Settings - Scheduler.

 

As for the filesystem to use, xfs is fine for singe device pools.

[Bjur]

Ahh okay thanks.

How often do you recommending TRIM your SSDs?

When you say single device pools are you talking only about SSDs?

My 5 x 3.5" HDD in my array is also XFS.

[JorgeB]

Just now, Bjur said:

How often do you recommending TRIM your SSDs?

Once a day is usually fine.

 

Just now, Bjur said:

My 5 x 3.5" HDD in my array is also XFS

That's what we consider the array, not a pool.

[Bjur]

Thanks for the reply.

Two last questions.

1. Would you recommend to use discard on SSDs instead of TRIM?

2. Is it better to use passthrough on the UD if it's used for DL for dockers?

[itimpi]

13 minutes ago, Bjur said:

Is it better to use passthrough on the UD if it's used for DL for dockers?

No, That is intended for the case when a VM uses the whole drive so you do not want UD to allow it to be mounted at the Unraid level.

[JorgeB]

33 minutes ago, Bjur said:

Would you recommend to use discard on SSDs instead of TRIM?

Unraid already uses discard as a mount option, but a scheduled TRIM is still recommended

[Bjur]

I have problems with making my SSD unassigned device a DL drive because of permission problems.

 

Can I make it a cache drive instead but only dedicated for DL and not to have anything to do with my other cache drive containing dockers?

[JorgeB]

You can have multiple pool, just create a new pool for that device.