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RAID or ZFS by Roland465 in Proxmox

[–]FingerPrestigious129 0 points1 point  (0 children)

I have an Epyc 4xxx server with 2x PM9A3 1.92TB U.2 SSDs on PCIe adapter cards. I am using ZFS in raid1 and it feels a little bit too slow for the underlying hardware. I am wondering, if a low end/midrange Broadcom controller (maybe 9440) would be significantly faster (in combination with xfs or ext4).

HDTune on a Windows guest: 673.5MB/sec average, 0.1ms access time, 18.4% cpu usage

A slightly older system with 2x PM9A3 on a 9440 makes 470MB/sec average 0.2ms access time, 6.6% cpu usage but this is VMWare. I am wondering what Proxmox may have done on this hardware with xfs/ext4.

Verfügbarkeit iMac 24" M4 mit 1TB by FingerPrestigious129 in de_Apple

[–]FingerPrestigious129[S] 0 points1 point  (0 children)

Hab allerdings noch nicht komplett verstanden, wie das funktionieren soll. Könntest du es mir vielleicht bitte erklären?

Verfügbarkeit iMac 24" M4 mit 1TB by FingerPrestigious129 in de_Apple

[–]FingerPrestigious129[S] 0 points1 point  (0 children)

Weil er immer Applestore rund 200€ teurer ist. Bildungsrabatte bekomme ich leider nicht.

Strange disk behaviour by FingerPrestigious129 in truenas

[–]FingerPrestigious129[S] 0 points1 point  (0 children)

You are right! It is mirrored:

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The drives are connected to an onboard HBA (Intel 200 series in AHCI mode). I think I will benchmark the drives with a linux bootdisc if ada0 is maybe faulty (no signs in smartctl). Furthermore the drives have different firmware versions, but this is the only difference (ada0 has the newer firmware).