QuadRank I've only seen on LoadReduced DIMMs (LR). You found in the online documentation that quad-ranks are not supported. I doublechecked and the HOM for the T430 (on page 115 and following) does not mention LR DIMMs to be supported which is weird as the R730s and even the 12G R720 do support it. Did they cripple the T430? Documentation is somewhat conflicting though and you won't get certainty unless you call in to support. Take for example this revamped article: https://www.dell.com/support/article/us/en/04/sln296980/memory-configuration-guidelines-for-13g-poweredge-servers-r430-t430-and-r530 It doesn't even list 256 GB, it mentions LRDIMMs somewhere, but then it's not listed in the tables. Oh my.
In theory the plan you came up with on how to populate the DIMMs across the channels for each CPU will not work. It violates the first rules of memory population to not mix LRDIMMS with RDIMMs. Also refer to page 120 in the HOM: the recommended way to upgrade to 256 GB is to have A1-A4 and B1-B4 populated each with 32 GB DDR4-2400 (PC4-19200R) DIMMs. That way you achieve full speed (2400 MHz) and you don't run into the 3DPC trap (Dell removed their TechCenter content. Oh my. Here's the link that just worked a months ago: http://en.community.dell.com/techcenter/b/techcenter/archive/2016/09/23/13g-poweredge-server-performance-sensitivity-to-memory-configuration ). I recommend 8x HMA84GR7MFR4N-UH ( https://www.skhynix.com/products.view.do?vseq=1883&cseq=75 ) for your setup. This will give you 266 MHz more speed compared to the TF modules you currently have if the CPU's memory controller supports it. https://www.memory4less.com/hynix-32gb-ddr4-pc19200-hma84gr7mfr4n-uh has them for $360 for example but you might get them used/refurbished at serversupply.com which then mandates to run the ePSA in thorough mode to find a possible dud. On Thu, Aug 23, 2018 at 12:03 PM <[email protected]> wrote: > > Hi All, > > I've been reading some documents for upgrading RAM on my T430 and I'm now > a little bit (more) confused. > > > * The H/W manual for the T430 specifies that only single-rank and > dual-rank memory is supported. > > https://www.dell.com/support/manuals/vg/en/vgbsdt1/poweredge-t430/t430_om/memory-specifications?guid=guid-ca0a64fb-081e-428b-abb4-6e0bf9c1582e&lang=en-us > > * The memory guidelines for 13th gen talk about single-rank and dual-rank > memory but mention 'quad-rank' in the footnotes: > > https://www.dell.com/support/article/us/en/19/sln296980/memory-configuration-guidelines-for-13g-poweredge-servers-r430-t430-and-r530?lang=en > > I have a Dell T430 I'd like to upgrade to 256gb. > The server came with that memory configuration: > > --------------------------------------------------------- > CPU0 : 8 * 16Gb dual-rank Mem (HMA42GR7MFR4N-TF) > CPU1 : 4 * 16gb dual-rank Mem (same as above). > --------------------------------------------------------- > > I've sold the DIMMs on CPU1 on ebay and found a set of 4 * 32Gb DIMMs (but > I noticed they're quad-rank) : HMA84GL7MMR4N-TF > > Since I'm planning to use those DIMMs on CPU1 only (a different memory > channel than those of CPU0), would the following configuration work? > > --------------------------------------------------------- > CPU0 : 8 * 16Gb dual-rank Mem (HMA42GR7MFR4N-TF) > CPU1 : 4 * 32gb quad-rank Mem (HMA84GL7MMR4N-TF). > --------------------------------------------------------- > > Any advice apreciated.. I would to avoid buying and then returning the > DIMMs if they don't work in the system. :( > > Thanks, > > Vincent > > _______________________________________________ > Linux-PowerEdge mailing list > [email protected] > https://lists.us.dell.com/mailman/listinfo/linux-poweredge > -- Tech III * AppControl * Endpoint Protection * Server Maintenance Buncombe County Schools Technology Department Network Group ComicSans Awareness Campaign <http://comicsanscriminal.com>
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