Common Datacenter Specifications

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This page will outline our preferred specifications for use in datacenters.

Overall Notes

  • We prefer to provide our own enclosures, as well as everything within those enclosures (including power strips).
  • We prefer a caged deployment over a shared row deployment.

Cabling Specifications

Color Cable Spec Network
Blue Cat6 Production
Green Cat5e Management
Orange Cat5e Serial
Red Cat5e Out of Band Access
Yellow 9/125 Singlemode Fiber All fiber connections
  • Fiber note: LC to LC in rack, SC to LC for peer/transit links.
  • Cabling Notes:
  • We use pre-made patches in rack (5'/7'/10') for mgmt and production network.
  • We use custom on-site assembled patches for serial.
  • These are nearly always cross-rack and must be custom measured.
  • The pin out differs to work for serial console (cisco/juniper/netapp/sun) without an adapter:
  • End Device Side: 568B
  • Serial Console Side: pin 4 white-green, pin 5 green, pin 6 blue (remainder immaterial)

Cabling Options

  • Gear Mounted Top of Rack
  • 12 3M Fiber or 12 10' CAT6 Ethernet Cable
  • 24 2M Fiber or 24 7' CAT6 Ethernet Cable
  • 5 1M Fiber or 5 5' CAT6 Ethernet Cable
  • Gear Mounted Mid-Rack
  • 10 1M Fiber or 10 5' CAT6 Ethernet Cable
  • 32 2M Fiber or 32 7' CAT6 Ethernet Cable

Power Specifications

US Based Sites

  • 208V 3 Phase power @ 30 Amps - Two circuits per enclosure for redundancy.
  • Sites in use: eqiad, sdtpa (not all racks redundant power)
  • Power connector used for 30AMP 3Phase is NEMA L21-30P(plug) / L21-30R(eceptacle).
  • Sites not in use: pmtpa (208V 3 Phase @ 20 Amps, redundant) & ULSFO(redundant).
  • Power connector used for 20AMP 3Phase is NEMA NEMA L21-20P(plug) / L21-20R(eceptacle).
  • ServerTech 0U SMART PDU
  • 42 c13 power ports per feed for a total of 84 ports.
  • Model: CS-84VDY-L2130
  • Also have to order (2) EMTH-1-1 to have two temp/humidity leads, and one Kit-MB-01 (two button mount kit - can use Rittal equivalent)
  • In our present deployments, we use SMART over SWITCHED due to the higher possible rate of failure of the switched power ports over non-switched power ports.
  • We have a rack with switched power, due to legacy equipment that could not out of band power cycle; though now none of that hardware is still in service.
  • RobH thinks we may need to re-investigate the failure rates on switched power, and possibly use it more, since it can be used to remotely clear service processors out of unrecoverable error states,
  • Power cords for servers are c13/c14 type.

Enclosure Specifications

  • Rittal TS-8 Enclosure
  • Rittal 9962172
  • Sheet Steel, 800MM W by 2200MM H by 1050MM D. Sand Texture, Black, Perforated front/rear doors, standard rear wall/door, perforated with 4 round cable entry in roof.
  • We have to get three kinds, right side end of row, left side end of row, and enclosures within the row.
  • Inner enclosure: partition wall left side
  • Right end enclosure: partition left, sidewall right
  • Left end enclosure: sidewall left
  • Rittal TS - External Baying Connector
  • Rittal 8800490
  • One kit gangs together two enclosures
  • Rittal Roof Mount Cable Manager for 32" Wide TS Enclosure
  • Rittal 9970016
  • Rittal Cable D Rings
  • Rittal 7111900
  • 4.7" x 3.5", pack of 10
  • Rittal Button Mount Brackets
  • Rittal 9971067

Network Specifications


  • Core Routers
  • Juniper MX80 (Caching Sites)
  • Juniper MX480 (Primary Sites)
  • Out of Band Access
  • Juniper SRX100B
  • Central Management Switch
  • Juniper EX4200-48T
  • Rack-level Access Switches
  • Juniper EX4200-48T - for non-10G racks
  • Juniper EX4550 - for 10G racks
  • Juniper sfp+ Uplink Modules for EX4200
  • Rack-level Management Switches
  • Central mgmt switch handles one connection to each rack, rack mgmt switch can be stupid.
  • Netgear FS750T2 - 48 port switch
  • We use as a dumb switch, we don't configure anything.
  • Transceivers
  • XFP: Finisar FTLX1412M3BCL
  • SFP+: Finisar FTLX1471D3BCL
  • SFP-T: Memorydealers SFP-1GE-FE-E-T-MD

Serial Console

  • Opengear CM4148
  • 48 port serial console server
  • We attach serial to every power strip and every bit of network kit (excluding the rack level mgmt switches)


  • Axis P1344 IP Camera

External Links

Axis P1344 Installation Guide