[pve-devel] [PATCH docs] system-requirements: mention that SSDs with PLP should be used

[Stefan Sterz]

On Wed Mar 20, 2024 at 10:49 AM CET, Aaron Lauterer wrote:
>
>
> On  2024-03-20  10:30, Fiona Ebner wrote:
> > Am 20.03.24 um 09:56 schrieb Aaron Lauterer:
> >> Signed-off-by: Aaron Lauterer <a.lauterer at proxmox.com>
> >> ---
> >>   pve-system-requirements.adoc | 2 ++
> >>   1 file changed, 2 insertions(+)
> >>
> >> diff --git a/pve-system-requirements.adoc b/pve-system-requirements.adoc
> >> index bc3689d..4db5358 100644
> >> --- a/pve-system-requirements.adoc
> >> +++ b/pve-system-requirements.adoc
> >> @@ -49,6 +49,8 @@ Recommended System Requirements
> >>     (BBU) or non-RAID for ZFS and Ceph. Neither ZFS nor Ceph are compatible with a
> >>     hardware RAID controller.
> >>   ** Shared and distributed storage is possible.
> >> +** SSDs with Power-Loss-Protection (PLP) are recommended for good performance.
> >> +  Using consumer SSDs is discouraged.
> >>
> >
> > Having PLP might correlate with having good performance, but it's not
> > the reason for good performance and good performance is not the reason
> > you want PLP. It's just that both things are present in many enterprise
> > SSDs, I'd mention that explicitly to avoid potential confusion.
>
> When it comes to sync writes, it is definitely one reason for the good
> performance ;)
> But yeah, let's think about it, what about the following?:
>
>
> Enterprise grade SSDs are recommended for good performance. Checking for
>   Power-Loss-Protection (PLP) is a good way to avoid consumer grade
> SSDs. The use of consumer grade SSDs is discouraged.
>
>
> Not too happy with that either, but phrasing it correctly and succinct
> is an art in itself.
>

How about:

Enterprise SSDs with good performance are recommended.
Power-Loss-Protection (PLP) support can help identify such disks. Using
consumer SSDs is discouraged

> >
> >>   * Redundant (Multi-)Gbit NICs, with additional NICs depending on the preferred
> >>     storage technology and cluster setup.
>
>
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