Mosaic offers data center server colocation & hosting space from single rack unit space to half 21U cabinets and full 42U locking server cabinets as well as private multi-cabinet cages in each data center facility serving Maryland, Virginia and Washington DC.

  • Flexible Configuration
  • Dual Stack IPv4 / IPv6
  • Blended Bandwidth Options
  • Copper & Fiber Cross Connects
  • Remote / Smart Hands
  • Monitoring Services
  • Local & Remote Backup


Our multiple points of presence is data centers around the DC area give Mosaic the flexibility that you need to find the right home for your servers. Whereas some datacenters will require you to purchase a whole rack just to house a single server, we can provide colocation for single servers up through your entire network infrastructure.

Since Mosaic allows for shared server cabinet usage (purchasing fractional space in a cabinet that also contains other clients’ server equipment) we can provide you with space for individual servers without the cost of an entire secure cabinet. Rackmount-ready equipment is designed to fit within industry standard sizing—the rackmount unit or “U”. In shopping for equipment you will find that the form factor of the equipment chassis is designated as “1U”, “2U”, “4U” etc. This tells you exactly how many rack space units are required to accommodate that server. Therefore, determining your total rack space requirements is a simple matter of adding up all the form factors of all of your equipment. Private server cabinet spaces will vary in size slightly by manufacturer, but generally, you will have 21U of available space in a half cabinet and 42U of available space in a full cabinet.

From single servers, to 42U cabinets or multi-cabinet cages.

When is a Private Cage colocation the right solution?

For very large colocation deployments, you may want to look beyond one or even several full cabinets, and instead consider a private cage. This kind of space is just what it sounds like – a fully enclosed wire cage with a locking metal door, to which only the colocation customer and designated facility staff have access.

Where cabinet space is rented by the U or by unit of private space (half cabinet or full cabinet), private cage space is typically rented by the square foot. Since cage spaces are private, you can use open racks inside cages instead of enclosed cabinets to hold your equipment – doing so can make access to equipment a bit easier and promote more even cooling. Cage space is not for everyone – the entry price point for a cage, which will typically be 100 square feet at minimum, is generally much higher than for other types of colocation & server hosting. That said, private cages provide unmatched flexibility when it comes to how you stack your equipment and allocate power, and if available space allows it you can even set up a small workstation inside your cage.