From nobody Thu Apr 13 12:56:21 2023 X-Original-To: freebsd-hardware@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4Py02L6Q5bz44xWb; Thu, 13 Apr 2023 12:56:26 +0000 (UTC) (envelope-from ml@netfence.it) Received: from soth.netfence.it (mailserver.netfence.it [78.134.96.152]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "mailserver.netfence.it", Issuer "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4Py02L3F9Bz3PDP; Thu, 13 Apr 2023 12:56:26 +0000 (UTC) (envelope-from ml@netfence.it) Authentication-Results: mx1.freebsd.org; none Received: from [10.1.2.18] (mailserver.netfence.it [78.134.96.152]) (authenticated bits=0) by soth.netfence.it (8.17.1/8.17.1) with ESMTPSA id 33DCuLgA090917 (version=TLSv1.3 cipher=TLS_AES_128_GCM_SHA256 bits=128 verify=NO); Thu, 13 Apr 2023 14:56:21 +0200 (CEST) (envelope-from ml@netfence.it) X-Authentication-Warning: soth.netfence.it: Host mailserver.netfence.it [78.134.96.152] claimed to be [10.1.2.18] Message-ID: Date: Thu, 13 Apr 2023 14:56:21 +0200 List-Id: General discussion of FreeBSD hardware List-Archive: https://lists.freebsd.org/archives/freebsd-hardware List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-hardware@freebsd.org MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:102.0) Gecko/20100101 Thunderbird/102.10.0 Subject: Re: M2 NVME support Content-Language: en-US To: egoitz@ramattack.net References: Cc: Freebsd fs , freebsd-hardware@freebsd.org, Freebsd hackers From: Andrea Venturoli In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Scanned-By: MIMEDefang 2.86 X-Rspamd-Queue-Id: 4Py02L3F9Bz3PDP X-Spamd-Bar: ---- X-Spamd-Result: default: False [-4.00 / 15.00]; REPLY(-4.00)[]; ASN(0.00)[asn:35612, ipnet:78.134.0.0/17, country:IT] X-Rspamd-Pre-Result: action=no action; module=replies; Message is reply to one we originated X-ThisMailContainsUnwantedMimeParts: N On 4/13/23 13:25, egoitz@ramattack.net wrote: > We are in the process of buying new hardware for use with FreeBSD and > ZFS. We are planning whether to buy M2 NVME disks or just SATA SSD disks > (probably Samsung PM* ones). How is you experience with them? I've never had any trouble with any SATA disks. As for M.2, I only have a RAID-1 root pool on one box: # nvmecontrol devlist nvme0: SPCC M.2 PCIe SSD nvme0ns1 (244198MB) nvme1: SPCC M.2 PCIe SSD nvme1ns1 (244198MB) So far, so good, but it's quite new. > Do you recommend one over the another? M.2 should be a lot faster than SATA. A good SATA RAID might be fast enough, however, depending on your needs. In the low-end market I would go with M.2, provided you have two slots on the MB. In the high-end, I'm not so sure... SATA enterprise SSDs are available, M.2, AFAIK, not. The new U.2 standard looks promising, but I'm not so sure it will catch on, while SATA will eventually disappear, but not any time soon. > Or do they perhaps work better with some specific disk controller?. You mean NVMe? There is really no controller (as it is intended in SATA/SCSI/SAS/...), they just appear on the PCI bus. bye av.