230 VAC, 30 Amp ATS with RS232 access

ATS18A-30 Specifications

The power input (2) on this unit (to the floor) are NEMA L6-30P (twist lock) plugs. We already had APC vertical PDUs in our racks and wanted to be able to integrate them with the ATS solution. This model contains NEMA L6-30R (2 female sockets) that allowed the APC metered PDUs to be plugged directly in.

Testing information
Due to limited resources for testing, only a 6 amp load was placed on the ATS switch. The following devices were used:

Initial login to the ATS system.

ATS-11 Series
(C) 2003 by BayTech

F3.04
Option(s) Installed:
True RMS Current
Internal Temperature
True RMS Voltage

Unit ID: ATS18A-30
Input Power Source:  1
     Average Power:  10 Watts 

True RMS Voltage 1:   209.1 Volts
True RMS Voltage 2:   208.3 Volts
  True RMS Current:     0.0 Amps
  Maximum Detected:     0.1 Amps

Internal Temperature:  29.5 C

Type "Help" for a list of commands

Below lists the commands that can be used while the serial mode is set to console on the ATS unit.

ATS-11>help

Status    --ATS-11 Status
Config    --Enter configuration mode
Source n  --Select the input power source, n=1 or 2
Current   --Display True RMS Current
Clear     --Reset the maximum detected current
Temp      --Read current temperature
Voltage   --Display True RMS Voltage
Logout    --Logoff
Logoff    --Logoff
Exit      --Logoff

Password  --Changes the current user password
Whoami    --Displays the current user name
Unitid    --Displays the unit ID
Help      --This Command

Type "Help" for a list of commands

Information before attaching the devices

ATS-11>status
Input Power Source:  1
     Average Power:       6 Watts
True RMS Voltage 1:   209.1 Volts
True RMS Voltage 2:   208.3 Volts
  True RMS Current:     0.1 Amps
  Maximum Detected:     0.1 Amps

Internal Temperature:  29.5 C

After attaching devices

ATS-11>
Unit ID: ATS18A-30

Input Power Source:  1
     Average Power:    1101 Watts 

True RMS Voltage 1:   208.7 Volts
True RMS Voltage 2:   208.8 Volts
  True RMS Current:     5.9 Amps
  Maximum Detected:     6.0 Amps

Internal Temperature:  30.0 C

Start of testing

ATS-11>current

  True RMS Current:     5.7 Amps
  Maximum Detected:     6.0 Amps

Below shows that we are currently running on power source 1

ATS-11>status

Input Power Source:  1
     Average Power:    1034 Watts
True RMS Voltage 1:   208.8 Volts
True RMS Voltage 2:   208.9 Volts
  True RMS Current:     5.7 Amps
  Maximum Detected:     6.0 Amps

Internal Temperature:  30.0 C

After failover test of source 1, below shows that the unit was failed over to the second power leg. This was completely transparent to ALL devices.

ATS-11>status

Input Power Source:  2
     Average Power:    1014 Watts 

True RMS Voltage 1:     0.4 Volts
True RMS Voltage 2:   208.2 Volts
  True RMS Current:     5.7 Amps
  Maximum Detected:     6.0 Amps

Internal Temperature:  29.5 C

Power source 1 was reconnected. The unit continued to run on source 2. For testing, source 2 was failed. As shown below, the unit automatically failed back over to source 1.

ATS-11>status

Unit ID: ATS18A-30

Input Power Source:    1
     Average Power:    1032 Watts 

True RMS Voltage 1:   208.8 Volts
True RMS Voltage 2:     0.6 Volts
  True RMS Current:     5.7 Amps
  Maximum Detected:     6.0 Amps

Internal Temperature:  30.0 C

Details one more time of current Amps.

ATS-11>current

  True RMS Current:     5.6 Amps
  Maximum Detected:     6.0 Amps

This unit has the ability to manually failover the power source via the console. Below confirms this ability. The input power source is currently 1.

ATS-11 Series

(C) 2003 by BayTech

F3.04
Option(s) Installed:

True RMS Current
Internal Temperature
True RMS Voltage

Unit ID: ATS18A-30

Input Power Source:    1
     Average Power:    1027 Watts 

True RMS Voltage 1:   208.7 Volts
True RMS Voltage 2:   208.9 Volts 

  True RMS Current:     5.6 Amps
  Maximum Detected:     6.0 Amps

Internal Temperature:  30.0 C

Using the “source” command, the unit is manually failed over to the other power source.

ATS-11>source 2

Unit ID: ATS18A-30

Input Power Source:  2
     Average Power:     956 Watts 

True RMS Voltage 1:   209.6 Volts
True RMS Voltage 2:   208.1 Volts 

  True RMS Current:     5.7 Amps
  Maximum Detected:     6.0 Amps

Internal Temperature:  30.0 C

Results:

All testing was completed without error. None of the devices reported any power problems or errors. The following were monitored:
- Each server via the RSA logging interface
- Cisco catalyst logs
- PDU interface and logs
- Visual inspection to check for booting indicators

The ATS was failed over from power source 1 to 2 without issue. Next source 1 was brought back online, and source 2 was failed. The switch failed back to source 1. Source 2 was brought back up and source 1 was failed again. This was performed approximately 5 times for verification. Also, manual failover utilizing the ATS serial console was performed without issue.

Notes: So this really works. I was somewhat sceptical initially, but now I am ready to put it into production. This is a great option for providing redundant power paths for servers or networking equipment that only has one power supply. I know that the single power supply units are still not truly redundantly powered, but at least this gives that single power fed unit a better chance. In this implementation, the power sources are redundant pathed under the floor at the colocation. This would work great also for a small office. Just feed one PDU to commercial building power and the other to a UPS unit.

Multi-bit screwdriver
These make it easy when working in a rack. Just change or flip the head and go from phillips to flat, large diameter to small. Most of these can also attach hex key and nut drivers. I would definitely recommend getting those attachments. I find myself having to use the hex keys on a lot of vendor supplied screws.

Multiple length and width screwdrivers
This one should be easy. You will need short and long screwdrivers. Sometimes absurdly long ones would be your savior. Definitely need a few that are thicker in the ends and even coated tips for strength. I have bent the ends of cheaper screwdrivers a ton of times on screws that are over-tightened on racks. I have also done the same by using to small of width screwdriver in a larger screw.

Needle nose pliers strait and curved
These are definitely a must! Screws fall all the time in places where you cant get your fingers. These work great for that purpose. I have also used these to bend metal and unscrew hex screws that I didn’t have heads for.

Scissors
One of the places not to skimp. Buy industrial scissors! My pairs are electrician scissors. They are extremely solid, made of stainless steal and have a ridged back on one side. The ridged back helps for straitening small cables. Thinking of the small cable pairs inside Ethernet cabling

Flashlight
Should be self explanatory. Go for small size and LED based. Makes it easier to move into position or sit on top of shelves or rails in a rack

Paperclips
Great for miscellaneous things. I have used them for pushing small power buttons, reset switches, and dip switches. They can also be used to hang cables out of the way temporarily.

Battery powered drill/screwdriver
This I can not do without. When racking or unracking one or more racks this is a need! Utilizing a power drill with screw heads will speed up any deployment and save a lot of energy from not having to twist ever screw 20 times. The drill portion is nice as well. I have had to drill a few screws that were stripped or stuck out of the rack. Of course this is a last case scenario.

Power
Multimeter
This is good for troubleshooting any power issue. Mainly used to find faults that aren’t showing on status indicators. Allows you to trace the circuit paths.
power adapters
There are multiple types of power connectors out there. Main ones to be encountered at a colocation are standard wall outlet style, clip in, and twist lock. Not to mention voltage. Depending on the customer, you can wind up with 120 or 208 AC. So make sure whatever you need to plugin can handle the voltage and you have a plug for it

Power tester
This comes in handy in a few ways. This shows if the outlet is live and has power, stability of the power, etc.

DC
When working in a DC environment, there are a few good things to keep on hand. Most telecommunications colocations outlaw zip or twist ties, so get a spool or wax string. Also, I keep fuses, fuse pullers, wire cutters, wire strippers, and termination ends.

Extension cord
This has saved me a few times. I do not always remember to bring my plug adapters or a device will not support 208 power. In this case, most colocations have 120 outlets throughout the perimeter walls. None have ever minded me using an extension cord to run a device or two while in the colocation. Also, I have also worked in a few DC colocations. AC equipment will not work on DC :)

Storage
Having portable storage is a definite need. The can solve the problem of transporting configuration files, ISOs, and pulling reports from servers, SANs, etc. I always keep a few flash drives handy since most Windows and Linux distribution recognize them. This is also good for smaller files. No need to plug in any power cables or USB cables. For all other needs, I have used external hard drives from carrying ISOs around, backup up data, and moving copies of big databases between locations. No need to kill your network connection to move a database 60 miles. External drives are cheap and easy to use. One note though, use encryption. Someone can steal these drives easily if you are not paying attention. Stay secure. Always have blank CD-RWs and DVD-RWs around. There have been a lot of times that I needed an install CD where I had the ISO saved but no media to write it to.

Rack
I always keep on hand a few cage nuts, cage screws in all sizes.

Network
As far as cabling goes, I try to keep the following in sub 1ft and up to 12 ft cables:
- strait through cables
– crossover cables
- patch cables
– fiber cabling
- Ratcheting Ethernet crimper
Used to attach ends onto network cabling.  Most will do RJ-11 (telephony) as well.  The  key here is ratcheting.  This means that you must depress the tool to a specific point before it will release.  Doing so decreases the chance of a poorly terminated cable head.
* digital toner
This is also a definite must! Older can fry out switch ports or network cards. Save yourself the trouble and get an digital toner. I use one from Fluke that cost me about 160$. When working in colocation network sprawl becomes an issue. Even with good change control, it is still worth going through doing a yearly audit of what cables go where. Hostnames change, servers are replaced or removed, cables get re-used. Tracing the cables by hand can be almost impossible when they are bundled and ran between racks. This is where a good toner comes in handy. They will send a pulse down the cable that can be traced with a hand held unit. So plug it in, go to the network rack(s) and wave it around until you find the cable. Saves a lot of time and most will be able to trace Ethernet, and RJ-11(telephone).
- Also keep a few spare serial, mini serial, and USB cables.

Misc
A few miscellaneous things I keep with me are:
- pen and pater
- velcro ties. Because any other are bad to use.
- permanent marker
- labeling machine
- static strap and static pad. Always use these when working on equipment. All it takes is one time and you can burn out anything from a server to a core router.
- digital camera for taking before and after pics.

Below is a list of what was reviewed above:

Tools
Multi-bit screwdriver
with nut driver
multiple length screwdrivers
needle nose pliers strait and curved
flashlight
paperclips for pushing micro power or reset switches
Battery powered drill/screwdriver

Power
multimeter
power adapters
power tester
extension cord

Storage
flash drive
external hard drive
Blank CD-RW and DVD-RW

Rack
cage nuts, cage screws

Network
min length
strait through cable
crossover cable
patch cable
long cables
serial cable
mini serial cable
fiber cable
digital network toner

Misc
pen and pater
velcro ties
permanent marker
labeling machine
static strap
static pad
digital camera

Below are links to examples of the type of products I keep in the toolkit.

http://www.flukenetworks.com/fnet/en-us/products/D-Snips/Overview.htm
http://www.flukenetworks.com/fnet/en-us/products/Cable+Splicing+Knife/Overview.htm
http://www.flukenetworks.com/fnet/en-us/products/IntelliTone+Toner+and+Probe/Features/

Notes:  I am sure that a few things were left off.  If you can think of any addittions to this please email me or leave a comment.  Thanks!

Shared storage
This of course is the lowest cost to the client.  Give them your needs and they will carve out space for the data on their EMCs.  Only requirement is that the servers connecting to them have fiber cards.  Downfalls are as follows:

• shared connectivity to colocation fiber switches
• shared EMC controller between clients
• pooled storage on bigger drives

This all affects the speed that each client recieves.  If a differnt customer is running high throughput, it will reduce the speed the controller can process as well as the read write speed of the shared drives.  The colocation keeps the data secure by using Cisco MDS fiber switches, encryption, and LUN masking.  This offering would be great for a startup company doing file sharing or VMWare servers needing storage.  It would definitely beat the initial price of buying their own fiber switches, EMC, and an employee/contractor to manage them.

Dedicated storage
Price jumps up high here, along with a few more service offerings.  If you already have Cisco fiber SAN switches, the colocation provider will manage them.  If not, they will allow connectivity to their switches using dedicated VSANs for your equipment, as well as encryption.  Dedicated spindles and also a dedicated controller will definitely speed up the read write operations on the unit.  Here, there is no need for LUN masking since it will only be your data on there.  Just with anything else, the costs increases with the number of spindles and or disk space needed.

To end, centralized storage offerings at the colocation is a great service to see coming out.  It will definitely help the smaller guys or startups get going.  Depending on your size, the cost of buying a dedicated system and fiber switches from EMC is a huge undertaking.  Especially with about a 5 year refresh being needed on the EMC.  Who knows, I am sure there are also some colocations providing ISCSI using Ethernet storage.

Note:  Replication of the data can be provided between EMCs within thier nationwide colocations.

• Locked Racks
• at least 2 factor authentication
• redundant power
• battery backup
• redundant switching
• N+1 redundancy
• multiple backup generators
• full load testing on battery and generator
• some level of high end support for colocations
• hot aisle / cold aisle setup
• great air conditioning and humidity control
• overhead cable troughs

I do not thing that those things are to much to ask!  Most people would be surprised at how many times that companies lack or can not provide them at a reliable rate.  Also, the following can separate the ok from the great data center:

• Multiple troughs to segregate cabling.  Separate runs for power, Ethernet, and fiber
• Security tokes all administered by guards on staff
• Cage leasing ability
• manged cabling services for Ethernet and fiber runs

I had the pleasure of touring a colocation lately that did EVERYTHING right.

Entrance:

By the time I made it to the door, I counted 3 perimeter video cameras.  I picked up the phone next to the door and it auto dialed.  I was greeted by a security guard on the other end of the line which after providing appointment information, buzzed me in.  I was now in a trap door setup.  I could go not further.  There was a bulletproof glassed in area to the left where the security guard was housed.  He slid open a tray like at a bank deposit window and requested my ID.  After my identity was verified, I signed in and was given a security card.  This happens every time someone comes to visit.  No access cards are permanently held by a client.  The location was around 10,000sqft.  I questioned their security monitoring and was informed that they had 52 motion sensing cameras on the colocation floor as well as 15 outside securing the building.  The wiring was amazing.  Their Ethernet, fiber, and Internet drops were all ran in separate troughs to the racks.  Cages were also available for lease.  The company does NOT oversubscribe their power.  What you request is what is provisioned which means the facility can actually provide full load to all PDUs.  All power components are completely redundant all the way out.  This is unlike most facilities which does have a single point of failure somewhere on their build-out.  I am ready to move our servers to a new place.