Terastation 51210RH RAM Upgrade, HDD Max Capacity, & SATA Power Disable Feature

[mjrgroup]

Greetings,

First of all I love Buffalo NAS products and own several Terastations. I purchased a preowned Terastation 51210RH with no drives and am in the process of setting it up. I intend on upgrading the RAM, populating all bays with 14TB enterprise SATA drives, and adding a second PSU for power redundancy.

I have a few questions I'm hoping a Buffalo expert can help me with.

1. The unit's motherboard has two DIMM slots, only one of which is occupied with an ADATA ADDE1600W8G11-BMIP (8GB DDR3 1.35V ECC 240-pin UDIMM)

Question A: Can I double up the RAM by adding a second 8GB ECC UDIMM RAM board to achieve a total of 16GB?
Question B: Can the board support more than 8GB per DIMM slot? What's the max it can support?

2. Many enterprise-grade SATA HDDs have a SATA power disable feature. If plugged into this unit, will the 51210RH support power disable and power up the drives correctly? Or do I need to kapton tape over the power disable pin on the SATA power connector on my HDDs?

3. Is there a maximum HDD capacity I can populate per bay? Is there anything that would technically prevent me from populating the unit with 20TB HDDs?

Thanks very much!

[Eastmarch]

We are supporting RAM upgrades, and a SSD Cache in a PCI-E slot on our new 7010. ;)

[mjrgroup]

Thanks. I just answered my own questions by purchasing and installed a pair of Crucial/Micron 1600 DDR3 ECC UDIMMs at the 2x8GB (total 16GB) capacity. The unit accepted them beautifully.

I also am using WD HC530 Enterprise grade 14TB HDDs with the power disable feature and am happy to report that the 51210RH supports the power disable drive feature perfectly. All drives spin up fine.

I also decided to inspect under the ARM CPU heatsink, anticipating that it had dried-up thermal paste, but actually used a quality thermal pad. Nevertheless, I removed, cleaned and replaced it with a quality paste, and then removed to visually inspect for coverage. The heatsink mounting clips give plenty of coverage and keep the heatsink firmly affixed. So it's all good.

I only wish I could locate heatsinks for the Aquantia 10GB ICs, which are 16x20mm chips and the mounting holes for the chips are 16x32mm approximately.