2025年1月2日 · As for software raid options with pbs, I benchmarked zfs and btrfs. btrfs consumes less cpu and much less RAM than zfs. It also came on top for effective throughput. I tried to tweak the benchmark to account for the very specific load of pbs, a continuous stream of files, sizes between 1Mbytes and 4Mbytes.

2021年2月20日 · "ZFS Raid 1" heißt "ZFS mirror" und kann aus 2-x Platten bestehen, wobei die Anzahl meistens gerade ist (zB bei 3 jedoch nicht, ist dann aber halt ein 3fach mirror). Ein HW-raid1 besteht aus 2 Platten, darüber hinaus ist es ein Raid10 mit gerade Anzahl (zB 10), ist aber eher selten, weil man da eher in Richtung Raid6 (oder bei sehr vielen ...

In general, Proxmox (via the installer) will do either ext4/xfs on LVM on either HW or linux md raid, or zfs. Either one can be thick or thin provisioned, although in both cases 'thick' is just a size reservation and not a guarantee that blocks will be on a certain part of the disk. ext4/xfs is only used for the Proxmox filesystem, not VM storage (but this does include ISOs and local backups

2024年3月31日 · Da hast du dann aber hakt auch keine anspruchsvollen CoW-Dateisysteme wie ZFS, üblicherweise kein Raid, kein Virtualisierungsoverhead, keine verschachtelten Dateisysteme, weniger DBs die viele Sync Writes absetzen, keine gemischten Blockgrößen, ... Billige consumer SSD ohne DRAM-Cache: kann weder async noch sync writes cachen/optimieren

2024年1月3日 · I've heard ZFS is the best for redundancy if you're doing more than 2 drives. And that BTRFS is better for certain features it has on top if ZFS features. And that RAID has been around for forever so people are familiar with it. Ive heard that RAID cards have had issues finding errors and have issues with failing after time.

2020年6月28日 · And for experienced users, who know raid and backup strategies well enough to make a good decision if a raid0 is a good option for the use case or not, it shouldn't be a big problem running the three oneliners to create the raid0 pool and add it as storage to PVE:

2015年9月2日 · ZFS does data checksumming, RAID controllers do not. You are protected against bit flips and other corruption with ZFS, RAID controllers only protect against entire disk failures, nothing more. ZFS will give you better performance with how the ARC works, even better than simple RAID caching. You don't even need all that much RAM by today's ...

2024年4月2日 · Benefit of ZFS for SW raid for example would be that you are not screwed once your hardware fails or if you want to upgrade your server, as ZFS will work on any machine and with HW raid you are forced to replace the hardware with one that uses the same (or at least a compatible) HW raid controller. Otherwise you won't be able to access your data.

2022年7月19日 · AFAICT usually software RAID is often easier to recover. If your hardware RAID controller fails it might be difficult to recover information about what disk carries which information etc. ZFS is typically easier to recover plus you can activate Scrubs and ZED notifications to inform you about failing arrays [1].

2022年5月28日 · If it's option A, then just replace the fake disk. Otherwise expanding with 3 disks is impossible. If you get another drive you can add that as a mirror to the pool. Striped mirror aka raid 10. Not the best imo since a raid Z2 is guaranteed 2 drive failures while striped mirror is only guaranteed 1 and MIGHT save you from 2.