Now I have purchased my hardware and know how big each piece is, I can figure out how they can best be placed.
I came up with the rack and desk diagrams below. They show the hardware layout, in a way that is halfway between the squished reality of my shed and a network topology diagram.
Most of the computers fit on the rack. Their placement is shown in the diagram below. Placement is partly decided because I ended up with more desktop-layout base units than tower ones and this is the only way I could get them to fit.
|LIC topography: computers on the rack and desk|
In addition to the rack I have a desk with a KVM set on it. This KVM set is attached to the KVM switch.
- each IBM PC is either a mini tower or desktop base unit. Each one has the tag "PC:" below.
- each PDU (Power Distribution Board) is a mains extension lead.
- kbd. is an abbreviation of keyboard, part of a KVM (Keyboard, Video, Mouse) set.
- Each piece of hardware is given a name. A hardware name is based on a host name. All host names in the LIC are five characters long.
This gives me plenty of room to store computers. I put the shared stuff in the middle and the computers at the edge. There is space on the rack to add more computers later, and free power sockets to plug them into.
The diagram shows
- 8 PCs
- 3 ethernet switches
- 3 KVM switches
- 3 video monitors
- 3 UPSs
- 6 PDUs
The desk contains no less than four keyboards and four mice. There is also a monitor, plugged into a spare socket on PDU01.
I have a limited amount of space. The problem of arranging four keyboards is a git. There's no feeling quite like realising you typed your file purge commands on the wrong keyboard.
|LIC topography: hardware on the desk|
|LIC kbd.: ckb01||LIC mouse: cms01|
|LIC kbd.: ckb02||LIC mouse: cms02|
|LIC kbd.: ckb03||LIC mouse: cms03|
|LIC kbd.: xkb01||external mouse: xms01|
One 2 port KVM switch xks01 connects the KVM set sits on my desk (video monitor xvm01, keyboard xkb01 and mouse xms01) to the PCs external to the LIC: xcl01 pretends to be the Internet and xcl02 pretends to be the enterprise.