LENOVO Server move to garage !

My brand new lenovo st550 server has been moved to the garage where she will live 🙂

Server has a single Xeon 4210 CPU for now, later it’s getting second cpu and doubble the memory. Currently has 64gigs ddr4 ecc. 8 x 1.2tb 2.5″ sas drives & 1.4tb pcie ssd io drive.

Unit is connected via fiber 10gig link to the main switch upstairs.

The server it’s self has it’s own 1500va ups. Behind the ups is a dlink nas with 4 2tb drives used for veeam backup storage.

We have aruba !

So, surfing the net and watching product videos I came across Aruba instant on devices. My first unit was the instant on ap.

Very impressive, so I sold my Brocade switch, and bought the new Aruba instant on 24 port POE switch with 4 x 10g sfp ports.

Installed and running. Very happy !

Telus 1gig symetrical!!

Yes yes ! Finally got Telus fiber, its fast too ! 1 gig symetrical connection.

At this time I’m only getting 790 down and 960 up, because my Untangle utm firewall is a little bit underpowered! However that’s going to change he he !

Been working on my SMD Aleph amplifier.

Been a really long time since I had time to assemble this Class a monoblock. As I was building it v1.0 board I found a few issues, and found some thing that need fixing. Good thing pcbs are $10 for 5, first was the 3watt 1ohm resistors, bah I picked the wrong footprints. Oh well I’ll solder them on and attach legs.

Next was screw holes to mount the output fets to heatsink, good thing no tracks near the holes.

Next was the 9.1v zener diodes, apparently I used to-big of pads, oh well.

After fixing few issues, I had it all ready for power up! AND no smoke!


Test heatsink for first power up, made testing and measuring voltages easy!

Powered up running after 3 hours it settled at 54deg, and achieved 90watts rms class a into 8 ohms, rail voltage of 45v.

10G and fiber, moved the server too!

That’s right, I finally got the fiber and cat6 cable ran to the garage.

The server has been running in the garage now for about 2 months over a slow wireless link, it worked for a temporary test. I had to move it from my main computer hobby room after installing all the new goodies.

The new hard ware installed was a HP 10gig dual port card, Nvidia Quatro k6000 video card & ny 1.6tb pcue ssd. Doing these upgrades raised the fans from 8% to 33, it’s not stupid loud, but I can’t work with it in the same room.

Now that its moved to the garage and connected with a 10gig link, I also ran a cat6 cable to a mini switch for back end management!!

Next upgrade is the ups, I have a nice unit that was given to me, but needs new batteries. Next purchase!

Some, audio action.

These are just test units for crossover designing, and measurements. Very basic with good bracing.

There is more bracing in the bottom, and there will be dual binding posts and a port at the back.

Still not sure if the final design will have port on bottom, or the back.

Is that a bag “o” ram ?

Nope, nothing to see here ! Move along ! Kidding! It’s a small bag of ram, 8 x 16gig DDR3 Ecc sticks.

This will push my Hp ML350 G8, to 256gigs ram.

Since it was off, I also decided to install the gpu and new GPU power cable.

Soon I’ll be converting the box to Esxi 6.5 with an upgrade to 6.7, and passing the gpu to a vm that I’ll be rdp’ing to.

Might play with thin clients too.