Search results for query: QLC

Most likely, yes. The two SATA drives were quite cheap (Insenso brand, if that says anything), so would likely be QLC. But would it become this slow, to the point that transfers actually stop while data is written out to the nand cells?

Are you using ZFS on drives with QLC flash memory? That can become really, really slow on sustained writes.

...Warum den i7, reicht dafür nicht ein i5? Warum die 2.5 SSDs von ADATA und keine NVMEs? Halten die TLC SSDs das ZFS aus? Ich habe gelesen das z.B. QLC SSDs ziemlich schnell durch ZFS kaputt gehen. Kommen dann VMs und Container auf den ZFS Mirror-0 (Raid1) wo auch das Proxmox BS drauf ist und...

...(like random sync writes) you will kill them pretty fast. Could last for years or be killed in a few weeks. Especially make sure not to buy QLC NAND SSDs or SMR HDDs in case you want to stick with consumer SSDs. Yes, that is one way to do it. You shouldn`t fill a ZFS pool too much. Usually...

thats bullshit you cannot say that generally. the ssd is fast for the first 70-80gb written to it sequentially. then the speed will be slower. so dont make this nonsense. i have multiple of these 8tb disk and they are only slow in external cases. on host you get 400-500mb/s until the cache is full.

You just discover the QVO serie and in general QLC memory, which writes slower than HDD, and even poor while sustrain writes...

...sync writes belasten ein ZFS ohne SLOG halt doppelt. Ist aber bei einer anständigen TBW auch kein Problem. Eine WD Black 850 eine Crucial P5 oder eine Samsung 990 EVO, alle mit 1200TBW (2TB ) und 5 Jahren Garantie ode eignen sich toll für ein ZFS! Billig QLC drives hingegen eignen sich gar nicht.

And keep in mind that you are using QLC consumer SSDs. Terrible choice for a ZFS pool. My PVE already killed multiple of those. ;) What I would do is destroying that pool, use both as LVM-Thin without raid as single disk and make sure to have proper backups (like getting a dedicated server for...

As I said I tried nomodeset, and I forgot to say but I tried both installer graphical and terminal when I was trying to install 8.2 (also tried with and without GPU card), since when I first tried I had a blackscreen after starting the installation.

...helped in other threads on this forum) or try the new non-graphical installer of PVE 8.2 (or both). Please be aware that the Crucial P3 uses QLC flash memory and might wear out quickly with Proxmox and be unusable slow when VMs write a lot. And it will definitely give problems if you use ZFS...

Es war ein Versuch der schief gegangen ist. Ich brauchte kurzfristig Platz. Mein HP DL 380G9 bekommt die Tage neue Platten und die werden schön altmodisch über den Raid Controller als Raid 5 bereitgestellt. Danke für die professionelle Hilfe.:) Im VMware Forum dauern Antworten Ewigkeiten Aber...

...Samsung, Solidigm, Micron und Kingston. Und wenn man 4TB will, dann sogar nur noch 3 Modelle von 550-700€. Und alles über 1TB braucht einen 22110 kompatiblen M.2-Slot. Und wenn du doch unbedingt eine Consumer SSD nehmen willst, dann guck wenigstens, dass diese keinen QLC-NAND verbaut haben kann.

So, I checked and I have two identical 1TB Crucial MX500 disks which seem to have "Micron 256Gb 64-layer 3D TLC". I am not sure how bad these are compared to other SATA models of their time, but clearly are not up-to-par currently... I think I have the following two problems: I have set up a...

Hi, yes i ment subscription, the community 1cpu, to support proxmox with little pocket change so to speak the 2x512GB is nvme/ssd, the 8T are hdd/mechanicals (Hetzner EX62 server) I also got 2 different IPv4 that i can use in some good way

...running the same software (just less/later updates). What are the differences between the 521G and 8T? If one a SDD and the other NVMe or HDD? Is one enterprise grade with PLP and the other consumer QLC? Maybe share the make and model, if you can. It rather depends on the details for any advise.

Well, for that use case as long as they're not QLC based nand you'll probably be ok. :) The product brief doesn't seem to specify the nand type, which is a bit concerning. Given how dodgy WD tends to be when trying to save a buck that could mean they'll be playing fast and loose with the nand...

I get that, its marketing bs, but we talking almost 300GB cache (The 1TB SN850X writes at over 6.4GBps for almost 46 seconds, showing a cache of around 295GB.) - where we maybe would write 15GB using DD(3x1gb per VM). Either way I believe there could also be some correlation with that...

...is full it will drop to TLC-NAND performance. And then its not unusual that such an SSD can't handle more than a few hundred MB/s (or with smaller QLC-NAND SSDs not even 100 MB/s). SSDs not designed for continous writes but bursts of writes will be very fast for a very short time and then suck.

When I try copying data from a second drive in the PC (HDD) to the system drive (SSD), the transfer speed is constant and around 100 MB/s (tested on a 4 GB file).

Maybe the problem is on the other end (like a QLC SSD or SMR HDD)? What if you copy a file within the server or to another PC or to a RAM-drive?