Search results for query: QLC ZFS

Sorry, I didn't know that the model may have a big impact. I have the Exceria Plus G3 which I guess is not PLP as they do not have DRAM. To be honest, I just kind of read that everybody just goes for a raid configuration. I figured, it's because it would be way more of a hassle to replace a...

Why won't you simply share the make and model of the drives? Maybe they are perfect for ZFS (PLP) or maybe they are terrible (QLC). Do you need the most space available (and no redundancy) or did you buy two to use in a mirror (RAID1) to prevent the service from going down when one drive fails...

That looks like a QLC drive. Please search the forum for QLC and ZFS and you'll find people who cannot believe that performance is worse than a HDD and that they wasted their money. Those threads usually also contain suggestions for enterprise SSDs with PLP (for fast sync writes).

I was much impressed by Micron 7450 (with PLP and therefore way better sync. writes/sec) for ZFS but I also have a Samsung 970 EVO (TLC consumer drive) that is still working. No guarantees though, as every brand/model can have an unlucky production run. EDIT: All this has been discussed before...

Da hast du die armen QVO aber richtig nieder gemacht. RaidZ ist durch die write Amplification eh schon I/O hungriger und das dann mit den QLC SSDs, das kann ja gar nicht funktionieren. Aber selbst wenn du einen ZFS Mirror oder Single DIsk gemacht hättest, sollte der Unterschied auch sehr...

Only if you keep insisting that you cannot work around this problem or do I interpret your sore-out-of-luck too depressingly? The other person with this problem setup WiFi and NAT on Proxmox to deal with this temporarily. There are plenty of (temporary) work-arounds, one of which you are already...

I will learn enough to manage the storage. But I just don't have the time to become an expert in the various configurations and benefits or drawbacks to each. Writing scripts for monitoring won't be a problem for me, I've worked in software engineering for over 20 years so when it comes to any...

Once you decided what storage to use you will have to learn how it works and how to administrate it and have a good backup strategy and disaster recovery plan. If not you will probably lose or at least risk your data sooner or later. There is for example no way to replace a failed ZFS disk via...

That is as intended. By default, Proxmox/ZFS considers non-enterprise SATA/SAS SSDs not to correctly implement TRIM/implement a slow TRIM that will drag down your system, so doesn't turn it on by default. NVME, however, is assumed to be well capable of periodic-trim as defined in the special...

Newer "WD Red" use terrible SMR and therefore shouldn't be used with ZFS. Only the "WD Red Pro" and "WD Red Plus" use CMR. Old "WD Red" could use SMR or CMR. Your WD40EFAX uses SMR and therefore will horribly suck at writing once the cache is full. Similar to what you see with QLC SSDs.

Yes but you will have to do that manually via CLI and you will have to install PVE using ZFS as a singel disk raid0. Not using LVM. A LVM installation can't be turned into a ZFS mirror later. - Install PVE using ZFS raid0 - do something similar to paragraph "Changing a failed bootable device"...

LZ4-Kompression kann Performance bringen, wenn man bandbreiten-limitiert ist (wie z.B. bei HDDs oder bei SSDs wenn der Cache voll ist), da eben weniger Daten gelesen/geschrieben werden müssen. Geht nicht nur um die Haltbarkeit. Ohne PLP fehlt gerne mal Faktor 100 an Performance wenn es um Sync...

Optimal ist es auf keinen Fall - das weiß ich selber, allerdings sind Datacenter NVMe SSDs mit 4TB noch recht selten und dementsprechend teuer. Die gewählten SSDs haben laut Herstellerangaben 5.84PB TBW, Samsung Datacenter SSDs mit 3.84TB haben 5.47PB. Sofern beide SSDs die angegebenen Werte...

You should use proper SSDs (Enteprise grade, no QLC, with power-loss Protection) with ZFS or otherwise the performnce and life expectation might not be great. RAM size shouldn't be the problem and will work fine with 2-4GB for the ARC. Yes, thats possible. You would need to manually partition...

ALso, QLC Consumer SSDs solltest du niemals mit ZFS benutzen. 1. Ist das Ding mit ZFS extrem langsam 2. Das dind wird in kürzester Zeit kaputt geschrieben. Mein Tip: Wenn du ZFS nutzen willst, kauf dir vernünftige SSDs mit PLP (Dazu gibts viele Infos im Forum) oder nutze die QLC SSDs lieber...

Naja, die QVO nutzt QLC NAND, also sehr sehr schlecht geeignet für Copy-on-Write Dateisysteme wie ZFS. Die kann dann beim Schreiben halt ganz schnell in die Knie gehen und wenn ich die Benchmarks richtig erinnere, dann liegt die Performance je nach Größe zwischen 40 und 80MB/s und damit lahmer...

Oh wow, thank you so much! I didnt know those hardware raid cards existed and they are not cheap lol. Going to try my hand at A and D. Really appreciate it!

There are 4 options: A.) use the pseudo-hardware raid of your mainboard to create a raid1. Then install PVE from the PVE ISO using LVM to that raid array. B.) same as A but buying a real hardware raid card with NVMe support (wont be cheap) C.) install PVE using the PVE ISO and create a software...

This was almost painful to read, I was originally going to say, for those vouching hard for PLP NVMe's, I wonder if they all also have ECC RAM. The other day there was someone who complained about PVE had IP on the bridge with VMs and their Win VM got ransomware which encrypted their SMB...

For me, ZFS is part of the disaster prevention. Sure, no raid or snapshots, not even ZFS, could replace proper multiple backups. But in my opinion, without ECC RAM and an integrity-checking filesystem, like ZFS, those backups aren't worth anything. It doesn't matter if I create a backup every...