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@dcsapak that'd be awewsome. I was wondering all the time how LTO is handling constant buffer underruns. Will it just pause and wait until the buffer is filled or will the constant tape speed just be tapered down? i already looked into the code, but i am not a rust guru :(. if i still can be...

@dcsapak thanks for the elaborate answer. I'm really trying to figure out how to scale pbs out.. I will try setting to "none", still, the documentation suggests, that it might have no effect or even be slower with spinners.. I guess it performs a lot better when doing a sync, because...

no offense, but well yeah, sorry that answer sounds a bit too easy. I could imagine that a smarter read ahead buffer feature could also do the "trick". Having close to one pb as flash for backup storage is just not very cost effective, and also quite unusual. Spinning rust is still the default...

So after some weeks/months and after a lot of testing I gained some insights: - When replicating one PBS to the other (Both 12-Disk RaidZ3 + special device) I easily get 300-400MB/s read/write performance on the source PBS and can easily write the same speed on the Offsite PBS. - When writing...

War kein ECC ram verbaut?

Okay mega, kannte ich nicht. Gute Hinweis.

Wie machst Du das? Ich war der Auffassung dass livemigration über clustergrenzen hinweg so nicht möglich ist.

Du meinst den Cluster im "mixed mode" zu betreiben? Es ist halt nicht recommended, und ich habe das bislang noch nicht gemacht. Ich kann mir schon vorstellen, daß es dort ungetestete Szenarien gibt, in denen es krachen könnte, und ich bemühe mich immer das Rolling pool upgrade so schnell wie...

Please don't pull my remarks out of context. I don't keep tapes 10 Years for archiving. My primary motivation is to have a solid Airgap for 6-12 month as an additional layer of security. I didn't talk about long term archiving, I am not sure how you come to assume this. It's about giving...

Hmm, ich habe einen gewissen Trackrecord im Updaten von Proxmox Clustern, tlw über mehrere Versionen, wenn ich beim Kunden verwahrloste ungepflegte Systeme updaten musste. Von daher mal ein bisschen best practice: - Wenn man sich Streng an die extrem gute Dokumentation im Proxmox wiki hält kann...

A Tape drive won't hurt, right? it's not meant to replace disk2disk backups. It's meant to have a full copy of your data (like maybe weekly) you can physically make inaccessible and really offline (and optionally relocate it a secure vault) in case something goes terribly wrong. Having the...

+ use a tapedrive to get airgapped backups. don't skip this.

Okay, this: NAME STATE READ WRITE CKSUM zfs ONLINE 0 0 0 mirror-0 ONLINE 0 0 0 sdc ONLINE 0 0 0 sdd ONLINE 0 0 0 mirror-1 ONLINE 0 0 0 sde...

Sounds plausible. Soon testing w/ RAIDZ10...

I killed the RAIDz2 now, and re-setup with a striped mirror. we'll see.

But please, I can write with sustained 300MB/s. 150MB/s really seems rather low..

Linux 6.5.11-6-pve (pbs-ba50-1) 01/10/24 _x86_64_ (56 CPU) avg-cpu: %user %nice %system %iowait %steal %idle 0.35 0.00 0.92 0.63 0.00 98.10 avg-cpu: %user %nice %system %iowait %steal %idle 0.05 0.00 0.58 0.84 0.00...

hi, I need some Input for troubleshooting a performance Issue I have on a Proxmox Backup Server I run. Basically it's an off-site System that syncs with a production PBS. The Specs as follows: - Supermicro Board + Chasssis - Dual E-2680v4 Xeon (2x 14c) - 128GB RAM - 2x 480gb Seagate Nytro SSD...

thanks for the elaborate answer.

Source?