Search results for query: SMR

It's the same with QLC and SMR drives: nobody buys them after searching the forum, always the other way around... Proxmox is based on Linux and you need to research support before buying any hardware. I have no personal experience with Thunderbolt/USB4, so maybe it still works for your use case...

WD40EFAX hat SMR, das wollen wir nicht. Was Du suchst und meiner Auswahl entspricht sind die Seagate IronWolf Pro NAS 4 TB CMR. CMR ist das Schlüsselwort, mit 7200 RPM sind die auch entsprechend etwas schneller. #...

...nicht für NAS oder für ZFS Betrieb geeignet. das hat WD selbst schon so in einem Statement dargestellt. Das liegt daran, dass die WD40EFAX SMR als Aufzeichnungsmethode verwenden. Mein kleiner PBS verwendet folgende HDDs: Seagate IronWolf Pro NAS 4 TB CMR (alternate.de) in Kombination mit...

I'm using old repurposed hardware for this, CPU is an Intel Xeon E3-1230 v3, HDDs are 6TB WD Red (mix of CMR and SMR) connected via an LSI 9300-8i.

Please don't replace them with a 4TB QLC SSD that looks like a good deal; you'll get into the same kind of troubles. People refuse to believe that they wasted their money to only get single-digit KB/s (sustained) writes and time-outs and errors with ZFS, but it has happened multiple times before...

This is the first I have heard of SMR or CMR drives in the 30 years I have been doing this stuff, but you are correct they are all 2.5 SMR Seagate Barracuda drives. They were all pulled out of some Dell laptops we had laying around for parts. Thought I would save some money that way after...

Device Model: ST1000LM049-2GH172 Its 2.5 SMR disk?

...out the hardware (check cables, run memtest and long SMART tests for the drives) and reinstall Proxmox and restoring your VM/CT/data from backups (once the hardware is fixed). EDIT: Your are using SMR drives which are terrible with ZFS (please search the forum and replace them with CMR drives).

...der SSD hat, dann liegt es ziemlich wahrscheinlich einfach an der Charge. Anders: es wird oft verbaut was gerade lieferbar und billig ist. Wenn 3 Cent gespart werden können, reiben sich Manager die Hände. War damals mit dem heimlichen untermogeln von SMR bei Drehplatten auch so ein Nümmerchen.

...WD Festplatten: WD40EFAX sind nicht für ZFS Betrieb geeignet und es wird direkt von WD davon abgeraten! Sie haben ein Aufnahmeverfahren dass sich SMR nennt und immer mehr als einen Sektor beschreiben muss. Das führt zur großen Abnutzung und bei mir sind so schon zwei der 4 Terabyte...

No, SMR disks are slow. For SMR disks it is.

https://nascompares.com/answer/list-of-wd-cmr-and-smr-hard-drives-hdd/ WDBPKJ0040BBK = SMR drive https://www.howtogeek.com/803276/cmr-vs.-smr-hard-drives-whats-the-difference/ SMR drives are the worst option for random-access...you could compare it with the sluggishness of an old...

...like you might be using crappy consumer-level drives, what are the make/model/size of drives that you have Proxmox installed to / use for data? SMR might be killing your performance, and Heaven help you if you're using something like a BX500 or QLC SSD. Both are absolute dumpster-fire level...

TLDR; no more IO Delay after update on (SMR?) HDD Thanks! This update really did it for me. I am running Proxmox off a HDD on a single core thinclient after Proxmox destroyed an USB stick and an SSD. Since using the HDD, the CPU IO Delay was always huge (60%+) when idle and only went down on...

...necessary The article you listed is an excellent resource. Yep, there's your problem. You might have gotten lucky but WD started mixing in SMR drives with the non-Pro Red line a few years ago. Huge uproar. I don't trust WD for anything but light desktop SSD these days. You're going to need...

...high IO delay values. You don't give ANY details on the disks themselves. What is the make/model/capacity? For all we know, you could be using SMR 5400rpm drives. Or lightweight shite like WD Blue spinners, those are desktop-class drives and tend to fail early. ZFS configuration also makes...

That looks definitive for usage of bad disks like consumer ssd's/nvme's or in case of hdd's with SMR technology.

...I/O won't be balanced, but it will let you create the pool without -f. And you'll have a spare 10tb for when a drive fails. BTW make sure you're using NAS-rated (or better, like Exos or SAS) drives. You don't want to build a zfs pool with desktop-class (e.g. Barracudas) or God forbid, SMR...

...by default. this showcases pretty well the latency impact, my laptops seagate drive is junk and so very slow, its an st2000Lm015 i believe SMR drive with a hardware flaw i forget what it is specifically, but it just happens to be one of the seagate flop drives that shipped out with a...

Hello, ZFS on an older server or one without ECC, combined with new CMR or SMR HDDs, tends to degrade constantly. I’ll test BTRFS to see how it performs—it would be great if it could be integrated directly into PBS. Thank you very much.