Date: Fri, 23 Sep 2011 14:06:35 +0300 From: Daniel Kalchev <daniel@digsys.bg> To: Jason Usher <jusher71@yahoo.com> Cc: freebsd-fs@freebsd.org, Rich <rincebrain@gmail.com> Subject: Re: redux: 48 or 96 sata3 paths ... specific ZFS hardware proposal Message-ID: <81C28D6A-47E6-4680-BFB2-BE36CAE4DD8C@digsys.bg> In-Reply-To: <1316729475.54812.YahooMailClassic@web121211.mail.ne1.yahoo.com> References: <1316729475.54812.YahooMailClassic@web121211.mail.ne1.yahoo.com>
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On Sep 23, 2011, at 01:11 , Jason Usher wrote: > You are saying I want the IR, yes ? >=20 You want IT firmware. You also need to follow exactly the procedure to = update the firmware and you also should use the Supermicro provided = software. In particular, pay attention to write down the original SAS = addresses. >=20 >> - If memory serves, the way the PCIe bandwidth works on >> that board is >> that slots 1-3 go to CPU1's interface and slots 4-7 go to >> CPU2. >=20 >=20 > So, if I add four LSI cards, I should probably put two of them on = slots 1,2 and the other two on 4,5 ... yes ? You also need to make sure you have two processors. In you only have = one, then ports 4-7 will get routed to the first CPU, via the same QPI = link to the hub chipset. You also need to make sure RAM is evenly populated for both CPUs, but = this should already be in the motherboard's documentation. It is somewhat unclear how good current FreeBSD handles NUMA and similar = architecture=85 At worst, you will end up with just the capacity of one = QPI link to the peripherals. Daniel=
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