Search results for query: QLC ZFS

Samsung QVO or QLC ssd are prohibited for zfs. Perfs will be bad then they wearout too quickly.

I wouldn't use that 870 QVO with ZFS. Search the forum for all the complains about unusable performance of people who try to use ZFS with QLC SSDs, like your QVO.

Das könnte man mal durchkalkulieren. Enterprise QLC SSDs mit ZFS Dedup sollten deutlich schneller sein als die großen Spindeln. Solange da nur wenige große VMs liegen wäre sowas auch eine Lösung.

What exactly is your problem with ZFS? You choose one of the ZFS raid options in the installer of the PVE ISO, maybe change some of the advanced options there (usually not required) and thats it. All other stuff is ZFS finetuning you can do any time later. The bigger question is, if your...

If you're disks are not connected via a hardware RAID controller, you'll be fine. The warning is about using ZFS on top of hardware RAID. QLC drives are very problematic with ZFS and you will probably have issues with them. Please search this forum about QLC drives.

It always depends... ZFS on SSDs is great, you just should get proper (enterprise) SSDs and not the cheap QLC consumer SSD crap. LVM+LVM-Thin can be great for a single disk setup when you don'T care that much about your data or uptime (or when you got HW raid below it). XFS could be useful in...

Hello; Smartctl test conducted after I/O error. I have checked the cabling and everthing seems in order. I have also tried zpool import -XF zfs_ssd_1 but did not work.

This makes more sense now. Ok so I should check on either LXC with just configured NFS, OpenMediaVault VM, TrueNAS VM (more on this on 3rd point) Now this I never thought of. I got 2 NVMe (TLC) and configured them in RAID1. I'll keep this in mind going forward, currently all hardware is new in...

And then think of all the people using your Wifi with Android smartphones that never received a security update for years while at the same time installing some random free apps of the app store. I personally don't want that such devices can access my private files on the NAS. ;) The key phrase...

Don't use consumer QLC SSD like your Samsung QVO with ZFS. They won't offer the durability and write performance ZFS needs. The last successfuly smarttest you showed was 60 hours ago. Was it done after the I/O errors occured or before? I would check the cabling. This can cause IO errors too...

In addition to what apoc wrote. Power-loss Protection allow enterprise SSDs to cache sync writes in DRAM cache, giving you magnitudes of better sync write performance. The spare area is bigger so more space to use as SLC-cache, to replace failed NAND cells increasing life expectation and more...

No, I didn't restarted the system. In my research I've read that this interruption may be caused for some other process using the drive, so proxmox abort the test. I paused all my vms and ran the tests again, and It was sucessful in both ssds. I'll post results bellow, due to character limit...

The test can take a long time and it appears that you restarted the system before it was finished. Maybe try again and wait longer? This does not look like a reputable brand. What kind of flash memory does it use? QLC will slow down so much during writes that ZFS will mark it as an error. If...

Don't use QLC-drives and better yet use enterprise SSDs (with PLP) or use spinning HDDs instead (as they perform more consistently than QLC-drives). Please search the forum about all the problems with QLC.

Thanks a lot. Yes I'm thinking of going with VMs and core OS on OS drive and was looking at TLC NVMe, NVMe mostly cause it doesn't take much space. Going to use all HDD slots for data drives. Also counting expenses as one time spending towards home improvement so not limiting myself much...

If you care about your data and downtime, yes. But I wouldn't use NVMe for that. The PVE system disk would even run fine using two old HDDs. So that is just wasting PCIe lanes and money. Two small SATA SSDs would be totally sufficient. Also, keep in mind that ZFS is quite demanding. SSDs will...

I agree with all your points. I will add a bit more meat to the bone to clarify things without making it overly complex. That person was most likely running things on a potato, most likely CPU/RAM constrained as opposed to storage I/O issues, or running in IDE instead of AHCI. I have tested ZFS...

FYI: https://portal.habitats.tech/Proxmox+VE+(PVE)/1.+PVE+7.x+-+Introduction Use ZFS over any other file/storage system (e.g. EXT, RAID ) on PVEn with adequate CPU & RAM resources. ZFS can be used on featherweight PVE nodes, but the file system will be slower than if using EXT; e.g. on a PVEn...

I don't say don't use ZFS in home environments. I just say get proper disks if you want to use it. See all the threads of people complaining about high IO delay and unusable write performance when using ZFS with QLC consumer SSDs. It always works like this: "Beginner: PVE is too slow!" "Me: Is...

I will incorporate your suggestions onto the forthcoming subject of storage. I have another two docs in the works for networking and clustering. All targeting small scale setups.