Posts

Showing posts from 2016

Setting up a lab while conserving electricity using DPM

Image
If you're like me and planning on using multiple physical hosts for your VMware home lab and yet want to conserve power and are lucky enough to have enterprise level hardware, VMware Dynamic Power Management (DPM) is probably your answer. You will need a bit of prep work to get this going, but once done, your lab will dynamically spin up and power down your physical nodes as needed.
Assumptions: 1) You are using some form of server that has a baseboard management controller, also known as a BMC (such as Dell DRAC or HP iLO - DRAC in this example) 2) You are using vCenter to manage your lab
Setup:
1) First you will have to ensure that your DRAC is configured to have IPMI enabled over the LAN (Intelligent Platform Management Interface - see wiki if interested). You can do this by logging into your DRAC, selecting "Remote Access" then the "Configuration" tab, and towards the bottom you will find "Enable IPMI Over LAN". Ensure that is checked.

2) You will…

Adventures in Server Land and Lab Rebuilds

OK, so short story:
If you have a PowerEdge 1950, and buy a 64GB RAM kit and shortly after upgrading you get either E1420 CPU Bus Perr errors (especially when loading ESXi), go into the Memory section of the BIOS and turn on Mirroring.

Now, the long story:

Alright, so this made me a bit irritated. Dell has 3 Generations of PowerEdge 1950, the Gen 1 Supports up to 32GB RAM, Gen 2.... eh, no real good documentation on that, and the Glorious Gen 3 which will allow this old server to go up to 64GB of DDR2 RAM. Beautiful for a home lab right?

Well, be careful about which version you have. If you're lucky and have a Dell branded one, you can look at the rack ear on the left hand side and it'll either be blank, or have a circle with an II (Gen 2) or III (Gen 3 obviously). Unfortunately, I don't. I have a pair of salvaged EMC RecoveryPoint servers which were 1950's rebranded. Yes I have service tags, no I don't have the markings. I check the website with the service tag, n…

Reconfiguring the lab

So the lab systems right now are a pair of Dell PE1950's (rebranded as EMC Recovery Points - Dual Xeon Quad Core procs, 16GB RAM ), a Cisco 3750G 24 Port Switch and a beat up server running FreeNAS. This has been a pain point for a while now, so It's finally getting an upgrade.

Bought two 64GB RAM Kits to upgrade the servers
4 x Quad GigE NIC to provide redundancy
Ordered a 48Port 10/100/1000 Cisco Switch to go with the current switch
Also setup a Synology 1815+ with 3x3TB drives and 2xSSD for Read/Write caching.

Should be good for experimenting with this configuration, assuming all goes well :)

Charles
@whitehattechs

Finally broke down and setup a blog.

So after prompting and prodding from a friend I am sitting down and trying my hand at a tech blog. I have a background in:

Backup and Recovery (mainly CommVault and NetBackup)
VMware
NetApp storage
Some Windows
A little Linux
Various other things that can get me into trouble.

I will update as time permits and questions get asked.

Charles
whitehattechs