Search results for query: QLC ZFS

Hi guys, pool backed up and then restored with new disk, thank you all for your indications About this, I know that using server grade disks will be better but this is a low cost-low activity server and make no sense to spend hundreds of bucks on this machine for storage. Old good SSD is...

And if you want the SSD not to fail that fast you could buy proper enterprise SSD with power-loss protection and higher TBW/DWPD like it is highly recommended when using ZFS. And especially avoid QLC SSDs.

Haha no, I am actually look for advice. So, what are your recommendations: Don't use ZFS at all? I wasn't planning to do so at first, but other people suggested that even with Raid0 ZFS brings extra advantages in data integrity, snapshots, back-ups. Also because I am not familiar with it, it is...

Since I am using these for backups / archives, perhaps there is a way to tell ZFS to increase the 120 second write time as I am not concerned about how long a write takes. Alternatively, I could try to convert the drives to use btrfs I suppose. Stuart

SMR HDDs got a terrible write performance once the caches are full. Similar to what you see with QLC SSDs...but even worse. SMR HDDs shouldn't be used with Copy-on-Write filesystems like ZFS. So this could be problematic. I for example got a ST4000DM004 and that one is so slow, that the whole...

Then I wouldn't use these with ZFS or any other Copy-on-Write filesystem like btrfs/qcow2/ceph/... with these SSD. If you want raid you are probably limited to HW raid or unsupported mdraid in case you care about performance or SSD wear. ZFS for the HDDs should be fine in case that isn't a raid...

SMR or CMR? QLC or without power-loss protection? HBA would be fine, just no raid controller adding a abstraction layer.

The HDD looks fine for Proxmox itself and some storage like ISO and maybe a place for one copy of your backups. You don't need to use ZFS at all if you don't want to or requires its features. Try to get an (second-hand) enterprise SSD with PLP for running your VMs and CTs, or at the very least...

I just got a Dell Optiplex 7050 with 7th gen Intel I5 and 500 GB SATA hdd. Will add 4x16 GB RAM and a 2TB SSD. Plan to use this for some Docker/LXC for development/testing and VMs for Plex, GitHub runner, as well as various Unix and Windows VMs(on demand for development and testing). Though...

A crappy old HDD would be fine for the PVE system disk. If a HDD can easily handle it, it shouldn`t be demanding for a modern (non-QLC cached) SSD. Durable Enterprise SSD with power-loss protection (preferable mirrored or with parity data), lots of (preferable ECC) RAM, no HW raid, some CPU...

Thank you so much for this insight and great idea!! Can you also suggest what would be better for rhis kind of QLC "enterprise" ssd like Micron ION above in terms of ZFS pool configuration? Let's say I have 12 drives. Is it better to run them as: a) stripe raid 0 type giving effective 12 drives...

It's a QLC SSD, so I hope you are not using it with ZFS. Just the fact that there are 72 messages in the error log, does not mean they are all problematic. The drive does seem to warn about high temperatures. Maybe it only gives problems when used too much/often and it gets too hot?

Sehr gut der Vergleich! Der würde jetzt passen wenn ich folgendes Thema erstellt hätte. ich möchte aus billigen Mitteln ein professionelles Proxmox System erstellen das mir 100%ige Ausfallsicherheit bietet und absolut schnell ist. dann währe der Vergleich mit deinem Fiesta angemessen. ich wollte...

Ja, nur das TrueNAS eben ZFS nutzt, was nicht gut mit billigen Consumer SSDs klar kommt. Spricht ja nichts dagegen das an Hardware zu verwenden was man hat, dann muss man aber eben auch Einstriche bei der Software machen. TrueNAS mit seinem ZFS ist halt ein Enterprise Produkt für Enterprise...

Sorry aber nochmal. Ich benötige keine Datensicherheit. Ist das strafbar? Stink normale billige SSD werden verwendet. Ist das strafbar? Ich bin kein Unternehmen sondern einfach nur eine privat Person die mit Proxmox rumspielt und sich amüsiert. Ist das strafbar? Ich möchte ein einfaches simples...

Also ein Stripe. Sorry, Du weist einfach nicht die Vorteile von ZFS zu schätzen. Klar braucht das mehr Verwaltungsaufwand. Aber für die Sicherheit der Daten ist mir das Wert. Welche SSD Flash-Speichertype wird eingesetzt? Sind das Server, Enterprise SSDs mit SDRam Chache? Wenn ich lesen "für...

This is great feedback, thank you so much for taking the time to share!

For ZFS (the software raid TrueNAS and PVE are using) you usually don't want QLC or consumer SSDs which those NV2 are both. Proper SSDs would be something like a Samsung PM9A3/PM983 or Micron 7400 PRO/7450 PRO/7400 MAX. Then I would get a LSI HBA card with PCIe passthrough. Disk passthrough is...

I do hope we don't have to explain the problems with QLC drives or poor performance with non-enterprise drives that lack PLP (if you want to use ZFS).

Looks like the difference is because of sync writes. Enterprise drives with PLP (Power Loss Protection) can safely cache sync writes; therefore they can do in a safe way what you do with sync=disabled in a very unsafe way. Remove all drives without PLP from your pool and you'll probably get the...