From: Sylvain Le Blanc <naz9ul@gmail.com>
To: Proxmox VE user list <pve-user@lists.proxmox.com>
Subject: Re: [PVE-User] Disk performance test guidance...
Date: Mon, 25 Apr 2022 10:07:53 -0400 [thread overview]
Message-ID: <CAOqk3KNMASugKGx3q4w6yRG_LNabcF0+ioreexNVfDhbPpOTSQ@mail.gmail.com> (raw)
In-Reply-To: <hjfgji-e552.ln1@hermione.lilliput.linux.it>
ZFS RAIDZ Drive Requirements
- RAID Z requires 3 drives or more
- RAID Z2 requires 5 drives or more
- RAID Z3 requires 8 drives or more
https://raidcalculators.com/zfs-raidz-capacity.php
Hope this help !
Le dim. 24 avr. 2022 14 h 40, Marco Gaiarin <gaio@lilliput.linux.it> a
écrit :
>
> In a set of servers (some brand new dell T440 with 64GB or RAM, 2 500M SSD
> ZFS Raid 1, three 4TB HDD in ZFS raid3) we are catching some performance
> issue, eg in some operation we catch 10/20 MB/s maximal performance, with
> load that go sky high (load 40).
>
>
> An example: a couple of identical servers, connected via single gigabit
> connection.
> I've setup on server B a NFS server on HDD ZFS pool, then a NFS type
> storage
> (on both servers, they are clustered).
>
> I've copied from my PC a PVE VM backup, roughly 500GB of data, via NFS to
> server B: 80-90 MB/s, load 2-4.
>
> I've restored the VM on server A, thus *reading* data fron NFS, and
> restoring again on HDD ZFS pool on server A: 10-20 MB/s transfer rate, load
> at 40.
>
>
> This make no sense to me. As subject say, there's some 'Disk performance
> test
> guidance' document, so i can test and find the bottleneck?
>
>
> Thanks.
>
> --
> Consolatevi! Sul sito http://www.sorryeverybody.com migliaia di
> americani
> chiedono scusa al mondo per la rielezione di Bush. (da Cacao Elefante)
>
>
>
> _______________________________________________
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> https://lists.proxmox.com/cgi-bin/mailman/listinfo/pve-user
>
>
next prev parent reply other threads:[~2022-04-25 14:08 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-04-24 17:56 Marco Gaiarin
2022-04-25 14:07 ` Sylvain Le Blanc [this message]
2022-04-27 20:33 ` Marco Gaiarin
2022-04-26 6:36 ` nada
2022-04-27 20:35 ` Marco Gaiarin
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