Search results for query: QLC ZFS

Thanks for your input - I really appreciate it! Not too concerned about the data on the drive as most of it's pretty newly setup but will keep this in mind and will give gparted or parted a go. I didn't mention above, but I'm not planning on using any of the partitions with Windows. It'll...

Shinking a partition can always corrupt your data. So first you should backup all that data on it. For the actual partitioning part I would boot into a gparted live ISO if you are not familiar with CLI partitioning tools like fdisk, sgdisk or parted. Also keep in mind that disk passthrough with...

Sind laut smartctl auch "870 EVO" und keine "870 QVO", da ist es dann nicht ganz so wild mit Abnutzung und Performance, da TLC statt QLC Consumer SSDs. Immer noch nicht toll für ZFS, aber je nach Workload Teils für kleinere Homelabs ausreichend. Fortschritt und Ergebnisse musst du mit zpool...

Das sind nicht nur Consumer SSDs, es sind QLC consumer SSDs, also so ziemlich das schlechteste was geht an SSDs. Sollte man eigentlich nicht im Server nutzen, erst recht nicht mit ZFS. Da hätte man lieber die 5€ drauflegen und dafür eine 1TB Evo mit TLC NAND holen sollen die ein mehrfaches so...

In 2,5" you don't find any consumer HDD with that capacity, or at least i couldn't find any by myself. I agree with you, tendency in computers is to go for cheap and bad ... so sad. I tried already this and was able to perform sequential write on 2 HDD of the lot over the entire drive keeping a...

You don't need enterprise HDDs but at least some consumer CMR HDDs. Try to write something like 1TB of media at once. Performance should significantly drop once the CMR cache is full. Problem with SMR disks is not only that it might get unusable slow. The latency then might become that bad, that...

You need to compare if the drives are QLC, TLC, MLC or SLC. This is the main difference between them. The main point in speed is the write performance and enterprise SSDs are much better in writing small blocks randomly and have also a much lower write amplification. Consumer SSD have a much...

No. If it doesn't got power-loss protection and no 1+ DWPD thats not a enteprise disk. BX500 is terrible QLC consumer grade SSD and more usable MX500 is TLC consumer grade SSD. BX500 would be terrible with ZFS and MX500 are debatable. Some people use them and think they are fine, some complain...

Yes. But if you want the HDDs managed by TrueNAS you don't need to create a ZFS pool with them on PVE. You would use PCI passthrough to passthrough the whole HBA with all disks attached to it, into your TrueNAS VM. TrueNAS then could directly access the unpartitioned physical HDDs and you would...

So i'm slowly getting to the point where my small cluster is getting important enough to have redundancy. I'm already running local storage on zfs and samsung entry level nvme's and performance is great.But looking at moving my mechanical backup to something more "solid". So as i know that ceph...

I don't think less people will spam the forums with "why is my ZFS performance so bad...?!" threads. But would be very useful to be able to quote some official benchmarks. Otherwise it looks like people got more trust in the manufacturers datasheets, promising multiple GB/s of write performance...

Hehe, well, so far only SSDs with PLP are planned, for no consumer stuff ;)

Would be nice to have some Samsung EVO vs Samsung QVO this time. Maybe then people stop buying QLC SSDs for ZFS :) Ceph needs 3+ nodes. Basically useless test as you are writing zeros and ZFS does block-level compression, compressing all the zeros. Try "fio" or at least use "if=/dev/urandom".

Wenige TB (irgendwas zwischen 2 und 4)... Günstige QLC SSDs haben i.d.R. keine Power Loss Protection, und afaik sollte man die schon verwenden. Gut, hier geht es nicht um ZFS oder Ceph, sondern eine Synology, da wird das sicherlich nicht sooo dramatisch sein. Und es geht "nur" um Backups, die...

so many thanks for your time. I used one that I have, that is why I bought a Samsung 870 EVO now.

Yeah :D I burned 2 of them in just a few months with ZFS Raid-0 for the boot pool.

By the way... terrible choice for ZFS as it is not only missing a power-loss protection but also uses QLC NAND. So even way slower and less durable than the common TLC consumer SSDs.

I did a lot of testing over the years and never got the ZFS write amplification significantly down. - try to avoid encryption if possible (doubles write amplification for whatever reason) - try to avoid CoW on top of CoW - try to avoid nested filesystems - don't use consumer SSDs without PLP as...

Thanks for the insights. When I bought the NVMe back then, I was aware about the QLC but didn't rate it so bad as I read it has 1TB TLC as write cache, however I can't find where I read this. I've been using the exact same setup with an Ubuntu mdraid on ext4 before and it was running...

No. Do some really bad workloads (like 4K sync writes) and the write performance of that SSD can easily drop to a few MB/s. SSDs are only fast at reading. When writing there are situations where a HDD could be faster. The SSD can only keep up the advertised write performance for a few seconds...