From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from firstgate.proxmox.com (firstgate.proxmox.com [212.224.123.68]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by lists.proxmox.com (Postfix) with ESMTPS id 5F9E1BA71E for ; Wed, 20 Mar 2024 11:01:55 +0100 (CET) Received: from firstgate.proxmox.com (localhost [127.0.0.1]) by firstgate.proxmox.com (Proxmox) with ESMTP id 40337D3E4 for ; Wed, 20 Mar 2024 11:01:55 +0100 (CET) Received: from proxmox-new.maurer-it.com (proxmox-new.maurer-it.com [94.136.29.106]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by firstgate.proxmox.com (Proxmox) with ESMTPS for ; Wed, 20 Mar 2024 11:01:51 +0100 (CET) Received: from proxmox-new.maurer-it.com (localhost.localdomain [127.0.0.1]) by proxmox-new.maurer-it.com (Proxmox) with ESMTP id 4A2D046842 for ; Wed, 20 Mar 2024 11:01:51 +0100 (CET) Mime-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=UTF-8 Date: Wed, 20 Mar 2024 11:01:50 +0100 Message-Id: From: "Stefan Sterz" To: "Proxmox VE development discussion" , "Fiona Ebner" X-Mailer: aerc 0.17.0-69-g65571b67d7d3-dirty References: <20240320085621.38773-1-a.lauterer@proxmox.com> <64796975-cb0f-46c6-b58d-6f42029ffd44@proxmox.com> In-Reply-To: X-SPAM-LEVEL: Spam detection results: 0 AWL -0.072 Adjusted score from AWL reputation of From: address BAYES_00 -1.9 Bayes spam probability is 0 to 1% DMARC_MISSING 0.1 Missing DMARC policy KAM_DMARC_STATUS 0.01 Test Rule for DKIM or SPF Failure with Strict Alignment SPF_HELO_NONE 0.001 SPF: HELO does not publish an SPF Record SPF_PASS -0.001 SPF: sender matches SPF record T_SCC_BODY_TEXT_LINE -0.01 - URIBL_BLOCKED 0.001 ADMINISTRATOR NOTICE: The query to URIBL was blocked. See http://wiki.apache.org/spamassassin/DnsBlocklists#dnsbl-block for more information. [proxmox.com] Subject: Re: [pve-devel] [PATCH docs] system-requirements: mention that SSDs with PLP should be used X-BeenThere: pve-devel@lists.proxmox.com X-Mailman-Version: 2.1.29 Precedence: list List-Id: Proxmox VE development discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 20 Mar 2024 10:01:55 -0000 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 > >> --- > >> pve-system-requirements.adoc | 2 ++ > >> 1 file changed, 2 insertions(+) > >> > >> diff --git a/pve-system-requirements.adoc b/pve-system-requirements.ad= oc > >> 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 compa= tible with a > >> hardware RAID controller. > >> ** Shared and distributed storage is possible. > >> +** SSDs with Power-Loss-Protection (PLP) are recommended for good per= formance. > >> + 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. > > > _______________________________________________ > pve-devel mailing list > pve-devel@lists.proxmox.com > https://lists.proxmox.com/cgi-bin/mailman/listinfo/pve-devel