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June 20, 2012

ASUS P8C WS Intel Xeon E3-1200 v2 Workstation Motherboard (LGA1155) Preview

The ASUS P8C WS is the first motherboard based on the C216 express chipset, and built for the new Intel Ivy Bridge Xeon CPU (E3-1200 series v2). For those that are wondering, the C216 chipset is a decendent of the C206 chipset that came with the Sandy Bridge generation. The big advantage of  the C206 and C216 series chipsets is the ability to leverage the on-die GPU of the “5” series CPUs, e.g. the Intel Xeon E3-1245 V2 CPU. Along with the ability to utilize the on-die GPU, one also can use Intel vPro for remote management, and at a much higher resolution than one can with traditional on-board BMC graphics. How will ASUS get on in bringing us their new workstation [...]

 
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April 11, 2012

Intel Ethernet Controller Buffer ECC Comparison

Intel recently posted an article outlining the ECC schemes found in its Ethernet controllers. For those that do not know, Intel Ethernet controllers have small (tens of KB usually) send/ receive buffers that help performance but are another point in the memory chain. After posting the RAID Reliability Anthology Part 1 I was contacted by a few folks that are fairly regular IEEE publishers on the subject for the big enterprise storage firms. One point that came up a few times is that using a triple parity scheme, such as RAID-Z3 would likely not be best modeled by a Poisson MTTDL distribution because at that point one is more likely to see failures of other hardware components such as [...]

 
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May 5, 2011

Kingston Security Labels: Always Check When Purchasing

Recently I have been testing several AMD G34 and Intel 5520 series platforms. Each AMD G34 CPU requires four sticks of memory for full quad channel operation, and each Intel CPU requires at least three DIMMs for triple channel operation. With fourteen G34 sockets and dodeca core Magny cours CPUs in various stages of testing, the G34 platforms alone require a minimum of 56 DIMMs. Needless to say, recently I have found myself scrambling to find sets of matching DIMMs and purchased Amazon.com’s entire inventory of 2x 1GB ECC 1333 DIMM kits one week (over a dozen pairs.) This led me to alternative sources, which turned out to be perilous.

 
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March 9, 2011

Unbuffered versus Registered ECC Memory – Difference between ECC UDIMMs and RDIMMs

Today, the vast majority of memory used by desktops, notebooks, and mobile devices is unbuffered non-ECC (Error Checking and Correction) DRAM. In fact, unless one is running an Intel or AMD CPU that can support ECC memory unbuffered ECC DRAM is the only choice for most users. Intel Xeons, for example, support ECC memory, while even the new Core i7’s do not. AMD has much broader ECC support at the CPU level, but many AMD motherboards do not support ECC memory features so it is not universal.

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