Wednesday, February 16, 2022

The M900 experience,

To begin, a couple of links:
  • I have installed an A&E key PCIe ethernet card which fits beautifully in the VGA/Serial option slot. It's an RTL1811 card, so not 'great'.

  • I already ordered a A&E-key to miniPCIe adapter from DeLock, and I've ordered a dual I350 chipset based miniPCIe card. It's dual, so that should be 'exiting' in terms of performance/manageability. I'm not sure it will fit in the case though!
Still waiting on the Tiny P340 from Lenovo. To be delivered in April. Still a lot of waiting to do. It's basically a completely standard one, but with a serial port (maybe for a UPS, we'll see).

So far the update for my TMM project, except for that I'm now using the P320 with the Nvidia P600 as a graphics card. Works great for my limited use so far.

Monday, January 31, 2022

Upgrading the Homelab.

Upgrading the Homelab


I've always had a homelab of sorts, until recently that consisted of a beefy NAS server and nothing else. The NAS server uses around 150W of power, much-too-much in my opinion.


'Upgrading' to an M900 Lenovo mini-server as here:



i5-6500T processor with 4 cores. I'm coming from a Intel® Xeon® Processor E5-2630L v4 with 10 cores and 20 threads. Needless to say I don't use this server processor to it's fullest capabilities. So going from a TDP of ~55W to 35W should make a huge difference. 

Storage controller:

Coming from an Adaptec RAID controller with 16 ports to an internal M.2 2Tbyte disk and a SATA connected 8Tbyte disk with 5x 4Tbyte external rotating disks (USB connected) with software-RAID is going to be quite a step-down, but should be very manageable. But it should bring down the power-usage.


Coming from a large amount of rotating disks (8x 4tbyte) and going to 1x 8Tbyte SSD should save a lot of power. The external rotating disks will be mounted when needed, and will thus not add much to the power-consumption.


Going from 48Gbytes of server-based memory to 64Gbytes of laptop memory (both DDR-4) should make quite a dent in the power consumption, hopefully.


The current power usage of the server is ~200W at idle and around 300W under full load, I hope to reduce that to around 20W during idle or about 50W during full load. I Think that will be a challenge with full retention 

The Six USB ports will be used by 5x 4Tbyte HDs, the internal 2.5" will be populated by a 8Tbyte SSD and the mini PCIe port will be used by a mini PCIe to Ethernet interface (It will also do duty as a firewall/router). As you can see in the pictures, there is not much space for the mini pcie -> Ethernet card.

Some pictures: