Search results for query: QLC ZFS

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

Schon wieder tauchen Fragen auf. Sry Bin noch ziemlich unerfahren mit Server Configs und ZFS. Warum Intel Gen 12 und nicht Gen 14? 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...

ZFS/PVE requires you to fix stuff via CLI where a typo will wipe all data on that pool. Would recommend to use something else like TrueNAS if you don't want to spend some hours/days to learn how to properly administrate it. There are some old Supermicro MiniPCs that got ECC but you probably...

Noch ein Mythos. Wer auf RAIDZ verzichtet und mirror benutzt, läuft nicht in padding Probleme und muss sich nicht um Details wie volblocksize kümmern. Die Belastung fast identisch mit ext4. Nur sync writes belasten ein ZFS ohne SLOG halt doppelt. Ist aber bei einer anständigen TBW auch kein...

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.

You probably need something like nomodeset (which seems to have 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...

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...

Für ZFS solltest du auch nur Enterprise SSDs mit einer Power-loss Protection nehmen. Wenn man da eine M.2 will, dann gibt es da nur eine Hand voll von Modellen von Samsung, Solidigm, Micron und Kingston. Und wenn man 4TB will, dann sogar nur noch 3 Modelle von 550-700€. Und alles über 1TB...

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...

You explain basically exactly the issues here, with 990 Pro's "explore the firmware question" -> Newest firmware doesn't change anything, they maybe fail slightly later. I thought updating helps too. "indicator is only 1-2 %" -> Correct, here either, they still fail. "temperature higher than...

> All consumer SSDs are not suitable for use with ZFS. Welllllll.... there's maybe some exceptions to "all" here. At least for homelab. Can only speak for myself, but the Lexar 1TB NM790 nvme that I've had running 24/7 in my Qotom pve since Feb is still at 0% wear, and reasonably fast with...

Please carefully read the test. We are not benchmarking the "disk io" that is just an additional information. It's not about the speed of the disk - it's about the speed of the filesystem. What will you gain in a multipass? We see the local filesystem is 1.2seconds (for 65536 directories) -...

note that i know that benchmarking storage is hard and error prone, but that has to be correctly done to produce results that are usable: i looked over the code and the results a bit and a few things stand out that might be not showing the full or correct picture: about the methodology: * i'd...

Naja, mit QLC-NAND hast du nur einen Bruchteil der Write Performance vom TLC-NAND. Gerade dann deutlich spürbar, wenn du die SSD voll machst und dann kaum freier Speicher mehr als SLC-Cache missbraucht werden kann. Wenn du zu viel schreibst und die SSD nicht mehr hinterher kommt, dann kann das...

In einem Verbund, egal ob ZFS oder etwas anderes, sollte man immer möglichst geliche Disks nutzen, da immer alles auf das Niveau der langsamsten gebremst wird. Ein Mirror über 2 NVMe (auch wenn Consumer nicht optimalist) wird brauchbar laufen. Machst du ein RaidZ, was noch deutlich mehr Overhead...

Mostly yes, but you suggested QVO drives, which are really bad for ZFS because of the QLC.

The original post states that the current Crucial MX500 drives are for Proxmox with 1TB Samsung Pro 860 drives handling the storage. Proxmox installs to LVM and has a light load on its disks unless you decide to try and oversize SWAP so that it has to page memory like mad.

Please search the forum for QLC drives and ZFS. People get really upset when they find out the money was wasted. And then they ask about good drives and you'll also find recommendations about (second-hand) enterprise drives with PLP.

I am observing some very high (>40%, sometimes 80%) IO Delay on Proxmox VE 8.2.2 with pve-no-subscription Repository. Looking at some Posts over this Forum, this may be due to not using Enterprise-Grade SSD, although to be honest I don't necessarily "buy" this justification. I am using Crucial...