From owner-freebsd-questions@FreeBSD.ORG Mon Jan 26 18:44:05 2015 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 1FF683A2 for ; Mon, 26 Jan 2015 18:44:05 +0000 (UTC) Received: from mail-oi0-f49.google.com (mail-oi0-f49.google.com [209.85.218.49]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id DE688B39 for ; Mon, 26 Jan 2015 18:44:04 +0000 (UTC) Received: by mail-oi0-f49.google.com with SMTP id a3so8595724oib.8 for ; Mon, 26 Jan 2015 10:43:57 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:in-reply-to:references:date :message-id:subject:from:to:cc:content-type; bh=7Re6hdw+2h7h+JEwCqbDhjPJixGPKoqeL1BFj+FxJQc=; b=Z+ntNVpqrO3vvIXil7SXYofxPmJO7gH4DbYbmPw8z6CQ0BgbwXCXtvNrZ7Spd6hZKR staPDqeL0YAAtuOmcI+cjYxCWPY3jXYUAjdHKpitJqPBVHnvbppj4SvGXeXGK930gfC7 MpDYLbxfdE/L94qBCuHwuWkcpt0FQWmS2F60oGhpL5kbl5GKC3FEr2Atxj5e9mczZ0gT Q/En9aDLhkQ+7ApOJa1IQJiq3mRprVotY6Pqeq3Tjwo9AS6zXGhvXQ5j8r2x4JHlk8Bm oZ2X+VldjW8YfiZER4NJ/kFh4xCo+oFE63OdqB3K3f9G40vJGxAR8SMJKSQglZPvIXHk wXoQ== X-Gm-Message-State: ALoCoQm8qlJcSLdPm7zbAKQ3CazYxLN74u5U3HbckcLpt4qhjP2pV5sQct++0d7IFGIIPb240QS0 MIME-Version: 1.0 X-Received: by 10.60.230.6 with SMTP id su6mr13833656oec.44.1422297837194; Mon, 26 Jan 2015 10:43:57 -0800 (PST) Received: by 10.202.51.196 with HTTP; Mon, 26 Jan 2015 10:43:57 -0800 (PST) X-Originating-IP: [93.221.163.124] In-Reply-To: <54C688FC.4070209@gmail.com> References: <54C688FC.4070209@gmail.com> Date: Mon, 26 Jan 2015 19:43:57 +0100 Message-ID: Subject: Re: [Semi-OT] SFF-8087 to eSata? From: "C. P. Ghost" To: jd1008 Content-Type: text/plain; charset=UTF-8 X-Content-Filtered-By: Mailman/MimeDel 2.1.18-1 Cc: FreeBSD Mailing List X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 26 Jan 2015 18:44:05 -0000 On Mon, Jan 26, 2015 at 7:35 PM, jd1008 wrote: > > On 01/26/2015 11:25 AM, C. P. Ghost wrote: > >> HBA which comes with 2 external SFF-8087 connectors >> for 4 drives each (that's an Avago SAS HBA 9207-8e, which >> supports up to 1024 HDDs according to specs). >> > I'm trying to understand your statement above. > You say each external sff supports 4 drives, yet > you say the HBA supports 1024 drives. > So, where are all the rest of the ports of the HBA? > Hello, I assume they mean 1024 with SATA expanders. AFAICS, it's 4 drives per SFF-8087 connector, if it's directly connected to 4 drives. > I know of eSATA chipset that understands when it > is connected (via a single connector) to a disk farm. > > Does you ssf port understand it is connected to a > disk farm box? If yes, can you configure your hba > to make it talk to a multi-disk (i.e. more than 4 disks) > farm via one of the ssf ports? > I'll have to try it as soon as I'm in front of that box (give or take a few days). If the SFF port can talk to multidisk, would a SFF-to-eSATA cable (if there's such a thing) do the job? That's not an optimum setup for sure, but it's for cold storage anyway. As long as all drives can be accessed through the SFF port albeit slower than directly attached, that's okay with me and the owner of that machine. You've got to wonder what weird setups some people come up with... *laughing*. Thanks, -cpghost. -- Cordula's Web. http://www.cordula.ws/