TRIM on mixed SSD/HHD ZFS pool

[Riccardo Veraldi]

On 08/06/2020 18:35, peter.blok at bsd4all.org wrote:
> Thx for your answer, but 6 enterprise SSD are way over my budget.

I am not sure about the ZFS implementation on FreeBSD but regarding ZFS
on Linux (ZoL0 there is a patched version which supports trimming,

and I have tryed it (on Linux RHEL7).

I had a positive experience with the Intel SSD DC S3510 series 480GB.
They are discontinued now but I have seen them on amazon at $280,

they are enterprise class, and I never needed to TRIM the FS on them, I
Really wrote a lot of data on them, and they are SATA.

I also bought a bunch of them second hand which were used intensively
and they still run fine even if they have been used a lot before me.

I used them as boot disk and system disk on OpenBSD (sparc64).

Rick



>
>> On 5 Jun 2020, at 11:23, Riccardo Veraldi <riccardo.veraldi at gmail.com> wrote:
>>
>> you may opt for enterprise level SSD disks. I have been using the 9300
>> NVMe series  with Lustre/ZFS writing extensive data and I have never
>> needed any trimming on them. They do automatic garbage collection.
>> They are quite expensive piece of hardware though.
>>
>> On 05/06/2020 08:37, peter.blok at bsd4all.org wrote:
>>> Hi,
>>>
>>> I have decided to gradually move over to SSD in my ZFS pool. Anybody knows if ZFS will issue a TRIM designated for the SSD in this mixed case, while the HDD do not support this?
>>>
>>> Peter
>>>
>>>
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