From mboxrd@z Thu Jan 1 00:00:00 1970 From: Nix Subject: Re: RAID types & chunks sizes for new NAS drives Date: Tue, 23 Jun 2020 13:26:33 +0100 Message-ID: <875zbi3r46.fsf@esperi.org.uk> References: <24305.24232.459249.386799@quad.stoffel.home> Mime-Version: 1.0 Content-Type: text/plain Return-path: In-Reply-To: <24305.24232.459249.386799@quad.stoffel.home> (John Stoffel's message of "Mon, 22 Jun 2020 21:45:12 -0400") Sender: linux-raid-owner@vger.kernel.org To: John Stoffel Cc: Ian Pilcher , linux-raid@vger.kernel.org List-Id: linux-raid.ids On 23 Jun 2020, John Stoffel told this: > You also don't say how *big* your disks will be, and if your 5 bay NAS > box can even split like that, and if it has the CPU to handle that. > Is it an NFS connection to the rest of your systems? Side note: NFSv4 really is much much better at this stuff than v3 ever was. With a fast enough network connection, I find NFSv4 as fast for more or less all workloads as NFSv3 was, mostly because of the lease support in v4 allowing client-side caching of the vast majority of files and directories that are either not written to or only written to by one client in a given short time window. (Obviously it also helps if your network is fast enough: 1GbE is going to be saturated many times over by a RAID array of any but the slowest modern HDDs. 10GbE and small 10GbE-capable switches are not very costly these days and is definitely worth investing in on the NFS server and any clients you care about.)