Search results for query: SMR

...Power-loss Protection für den VM/LXC Storage. Für Coldstorage oder Systemdisk würde es auch eine HDD tun. Guck nur dass es eine CMR HDD und keine SMR HDD ist. Im Falle von LVM würde es auch eine Consumer Grade SSD tun, aber da würde ich dann alles meiden was QLC NAND verbaut haben könnte...

When using ZFS it's highly recommended to: 1.) not use SMR HDDs (but CMR HDDs and ideally with additional SSDs as "special" vdevs) 2.) not use consumer grade SSDs (but enterprise grade with power-loss protection) So keep that in mind when buying new disks in case you want to make use of TrueNAS...

...mit power-loss protection nehmen und keine QLC Consumer SSDs...das ist so ziemlich das schlechteste was man sich für ZFS hätte kaufen können...mal abgesehen von SMR HDDs...wenigstens TLC Consumer SSDs sollten das schon sein wenn man nicht so Wert auf seine Daten, Performance oder Haltbarkeit...

Dear Neobin, I have tested simply larger mkv files like 5 - 10 GB in size as well as well as smaller ones with 2-5 GB... I will mainly and only use OMV and the attached disk as data storage for movies. Of course I used the same files when copying them direct from windows when that very same...

With what amount of data did you test? From a quick search, those are SMR-drives which are(/become really quick) in general terrible in writes. 2.5", USB and even virtualization does not make it better... Search your exact model in this regard.

...if AME supports GPU encoding but if it does it would make sense to PCI passthrough a GPU. Be aware that it is highly recommended not to use any SMR HDDs and no consumer SSD without a power-loss protection, especially not with QLC NAND, when using ZFS. With M.2 there are only a hand full of...

...I'll check the IOMMU/TV-d in the Asus docs. I started looking at the MSI PRO B660M-A DDR4 and does support IOMMU/TV-d. And for the drives I'll watch out for QLC and SMR. In theory, should Proxmox install on pretty much any modern mainboard? Of course some will work much better than others.

If you want to do PCIe passthrough, see if you can find out the IOMMU groups beforehand to prevent disappointment later. Remember that storage that uses QLC or SMR can also ruin a good build.

Also please the output of ps auxwf Please note that your WD Red HDD is an SMR disk, which is known to perform poorly with ZFS. The scrub process on your SSD is running very slowly, which also indicates an issue with the SSD. Please check if there is a firmware update available for the SSD.

...it is high recommended to: A) use ECC RAM B) use enterprise/datacenter grade SSD with power-loss protection C) not to use QLC SSD D) not to use SMR HDDs E) not to use HW raid card but a dumb HBA or onboard ports And that ZFS is about data integrity not about performance. Nearly everything...

Dunuin, et alia: I am still researching it, but it does seem that BTFRS now has code to properly deal with SMR drives. I have to admit, it is going to be a royal pain to move all my data around to reformat my 4x8TB array from ZFS to BTRFS (if that is the solution I end up using), but, I suppose...

...such an option. Maybe you could set a "sync=always" so no async writes won'T be used that could pile up in RAM when the disks are too slow to actually write it down. Maybe not thatmuch overhead but still Copy-on-Write. I'm not into btrfs but I would guess they also don't recommend to use SMR...

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...

Dunuin, As far as I can tell: Both of these models are 5400RPM I realize now. The 8TB Seagate drives (model ST8000DM004) are SMR. The WDC WD80EZZX-11CSGA0 is CMR. Stuart

And did you check that these WD/Seagage disks are actually using CMR and not SMR? Because Seagate is selling 8TB SMR disks.

Perhaps, but I doubt that is the overarching issue in the present case before us. follows hereupon an execution of the free command: $ free -h --giga --committed total used free shared buff/cache available Mem: 177G 109G 68G...

And there is enough memory? Because high IO and running out our RAM could cause this in the past. Or maybe just too slow drives like SMR HDDs that can't write the transaction group from RAM to disk in under 120 seconds when there are alot of transctions piling up?

CMR QLC

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