40 years in a Datacenter
My career
My career starts in the early 1980s when I was in high school, and it meanders through 40+ years of technology. This section contains what I have accomplished in various areas of engineering and programming. Projects that were completed and code that were written along with solutions. Many of these solutions helped vendors develop and implement better technology. I have a large section of notes on LAMP components: LAMP: Linux, Apache, MySQL, or MariaDB along with PHP for building your own WordPress server. You can read the section on Fortinet to get an idea how to secure your home lab. I started in networking with 4 Mbps Coax Ring Topology in the 1980s up to 10 Gbps fiber in my data center at work. My home lab is 2.5G networking.
I start pulling IBM 4 Mbit token ring cabling for Novell Netware 3.x servers and IBM XT computers. In 1986, My first computer was an IBM XT 8 Mhz 8 bit computer running IBM DOS 2.15. I eventually upgraded it to MS DOS 3.2. In the late 80s / early 90s, I made my first AT 16 Mhz clone computer.
1986: My first hard drive: Seagate 8 bit MFM ST01 controller and a Seagate ST4096 MFM 80 Megabyte Hard Drive. 32MB partitions. You used spinrite to fix bad sectors.
1990, I installed Windows 3.0 from 5.25″ floppies
1991: Installed Linus Torvalds first version of Linux 0.02
My biggest project at Americorp Financial.
Fixing Excel and T-Value
=(PMT(B33/360*365/12,60,-B16))*0.998317 is the formula Excel and T-Value match within a penny.
One of the things that I needed to solve was how to get my project numbers to match in Excel and T-Value. I found that PMT was always off from T-Value so I applied mathematical concepts to solve for a skew factor that fixed the issue.