Pros: I'm a big fan of ASUS. I have a few of their MOBOs and several monitors, they make great stuff but I have no idea what the issue is with the server mobo I received today...
Cons: This is my 4th or 5th PC build, but my first ever server build. I can't for the life of my get this thing to make it through POST/into bios. The LED indicator says "b7" (yes, lowercase "b") which, according to the manual means: NVRAM configuration reset
Summary: My prior review said the memory slots were bad. Turns out the problem was the CPU. After installing a new CPU (same kind as the first, just a new one) it worked perfectly with all four sticks of RAM installed.
Summary: I have ordered another Z9PA-U8 board, hopefully the new one will work.
Pros: Works great with 1 stick of RAM.
Cons: Will not boot with more than one stick of RAM. I tried another set of RAM, same problem. The first two sets of RAM meet the motherboard specs, but were not on ASUS's QVL list. I got a third set of RAM, which was on the QVL list, but still have the same problem. I have built many computers and servers and am very familiar with installing RAM. I highly doubt the problem was with my installation of the RAM.
Summary: I've been building desktop PCs for over 13 years now and this board marks my first successful server build. Everything in the box is good quality as expected. Full manual, driver discs, sata cables, IO shield and even a case badge are included. I paired this board with an E5 2603, 16Gb of Wintec Registered ECC ram and a seasonic platinum power supply. It runs ESXi 5.5 from flash with an ssd cache drive and 1 Tb local data store.
Pros: I have Microsoft Server 2008 R2 Datacenter running on this server board with Microsoft’s Hyper-V supporting 25 virtual machines and 128 Gig of RAM installed. It runs fast and has been in production for over 2 months now with no problems. I also have 2 LSI Raid controllers connected as well. One with 8 Kingston SSD drives in a Raid 6 and another with 8 Seagate 3 TB drives also in a Raid 6 configuration. The optional iKVM works great as well.
Cons: Only wish Newegg carried the ASMB6-iKVM module themselves. I had to order it from another supplier instead.