Frequently Asked Questions

FAQ last updated: February 18, 2015

Investment / IPO

Prior to the availability on Exchanges, units of capacity can be purchased by sending Bitcoins to DataTank Mining’s wallet address directly or via fiat money.

A minimum purchase quantity of 100kW (10,000 units) applies for direct purchases during the pre IPO period. Please contact with the capacity desired for details.

When payments are collected, units are assigned and the payment addresses will be recorded for future dividend payments.


For users of Exchanges, dividends will automatically appear in the unit holders Exchange Bitcoin wallets.

For holders of units directly purchased from DataTank Mining, we keep record of the payment addresses and transaction IDs to assign units to holders. Dividends are then paid to the payment addresses.

Dividends are paid in BTC, also for holders of units purchased with fiat money.



DataTank Mining uses the Bitcoin blockchain to sell shares and pay dividends. No other information is required.

For publicly traded shares, for instance at virtual exchanges or other platforms, the rules may be different.




DataTank systems are compatible with chips from Spondoolies Tech, InnoSilicon, Hashra, HashFast, GridSeed, Cointerra, Butterfly Labs, Bitfury, Alcheminer, Avalon, ASICminer and more. Bitcoin, Scrypt, any other hardware. Including GPU, CPU or FPGA mining.

DataTank systems work with any chip or hardware and almost all of the ASICs on the market have been immersion tested. Most if not all ASIC manufacturers (Bitcoin and Scrypt) are working on immersion blade designs or can make them available on demand.

With an in-house manufacturing line that can handle initial deployment quantities, and established manufacturing partners for larger quantities next door in China, DataTank Mining will initially focus on manufacturing boards internally. This will ensure a controlled and streamlined deployment process, and that schedules and quality standards are met.

At a later stage, manufacturers are welcome to provide their completed immersion blades for deployment, further reducing operating efforts for the company. Our engineers are working with a number of manufacturers to get their boards immersion ready. DataTank Mining will provide preferential capacity for manufacturers, to ensure demand is met.

DataTank systems come with integrated 12V power distribution, and can be equipped with any other voltage on demand (including 48VDC) for new developments. Optionally, manufacturers can chose to design complete clusters in a 19-inch form factor to fit into DataTank systems for deployment.

DataTank Design Guidelines (PDF).
DataTank Information Folder (Google Drive)


Immersion blades are boards with ASIC chips that have been created with the objective of a plug-and-play experience, and to make infrastructure (such as power supplies) reusable. Immersion blades do not have unnecessary parts, such as heatsinks and fans, or any other mechanical structure (no cases, cables, connectors, water cooler sockets, etc).

The standardized form factor of immersion blades guarantees optimum density, future compatibility and rapid deployment capability. An immersion blade looks like a larger memory DIMM, consisting of a PCB, “gold fingers” and chips. Different type of hardware can be combined (ie. Scrypt or SHA-256 blades) next to each other.

The minimalistic design reduces hardware to chips on boards will ensure that hardware can be assembled quick, manufacturers don’t need to spend time with case or thermal design, part sourcing, mechanical assembly and logistics. Mining clusters come online fast.

Immersion cooling removes thermal constraints, and with efficient and inexpensive 12V and 5V available in the tanks (48VDC and others available on demand), designers do not need to spend time on power considerations. Immersion cooling also allows overclocking of existing hardware, which would otherwise be constrained by thermal limits.

DataTank Design Guidelines (PDF).
DataTank Information Folder (Google Drive)


Immersion Cooling

No it won’t, 2-phase immersion cooling costs less than anything else. We spend less money on parts, we spend less money on labor for assembly and maintenance, we spend less money on electricity. Systems are 100% reusable, in contrast to other technology such as heatsinks and fans. The infrastructure (power, cooling, room structure, etc) required to run our miners is dramatically reduced, too. A single person can deploy hundreds of boards within hours, instead of days or weeks normally spent on assembly and setup. These are just some of the factors that make it less expensive.

3M fluids and immersion cooling have a reputation of being more expensive. What most people forget is that only little fluid is needed for a lot of heat, and that a tank full with hundreds of boards costs a lot less than dozens of racks with machines with cases and fans or water coolers.

To give you an example, we can cool 4kW (4000W) in a small space of 1 liter volume with only 200cc of fluid. Even heatsinks and fans for hardware with 4000W will cost more than just 200cc of fluid. We challenge manufacturers to build hardware that dense, and we will cool it for a few dollars. And that is just one side of the equation.

To make a long story short, it is less expensive to build and to run. That’s the value proposition of passive 2-phase immersion cooling. We can build denser hardware than anyone else, and that much faster. Better cooling also means better performance.

DataTank Mining will also use different types of fluids and brands of fluids to further reduce costs where possible.


Passive 2-phase immersion cooling is not the same as mineral oil cooling. Mineral oil is not very efficient compared to passive 2-phase immersion cooling, because it requires noisy and power hungry oil pumps and oil filters in addition to a secondary cooling loop with heat exchangers and water-pumps.

Mineral oil also doesn’t allow high density deployments, because heatsinks are still required. Heat sinks still need to be assembled to boards, and in worst case thermal grease needs to be cleaned up and replaced by expensive indium foil in order to avoid the oil from becoming milky.  Oil in general is extremely messy, while with 2-phase immersion fluids boards come out dry.

Mineral oil is also flammable and will require compliance with government regulations and approval by fire departments, as well as specialty insurance. The working fluids we use in passive 2-phase immersion cooling systems are non-flammable, eco-friendly and the fluids are reusable for 30 years.

Oil cooling is a single phase heat transfer process (= it never changes from liquid to vapor phase), while the magic of the passive 2-phase immersion cooling process comes from evaporation.

Oil cooling does not eliminate the time consuming and expensive mechanical structure, it introduces new points of failure.

You’ll find some more info in this blog here and in the FAQ here.



DataTank Mining has an exclusive agreement with Allied Control, which in turn is 3M™ Technology Partner for Novec™ Engineered Fluids. The agreement encompasses to purchase DataTank container mining units at production cost value for internal use at DataTank Mining.

In return for being a guaranteed and returning customer for immersion cooling technology, DataTank Mining also gets exclusive prices for the most efficient mining system on the market for external sales.

As part of the deal, DataTank Mining can also benefit from free access to company resources, including in-house production line for ASIC boards, an experienced team, as well as the buying power of an established business.

Allied Control has the preferential right to purchase DataTank systems and fluid back at fair market value, should DataTank Mining decide to cease operations.

For the avoidance of any doubt, DataTank Mining Limited and Allied Control Limited are separate entities. Allied Control builds immersion cooling systems, DataTank Mining is a mining operation. Income of DataTank Mining will remain in the company, and partners such as Allied Control will only be paid for goods and services rendered.

Allied Control Company Info




Here is an overview of the optimal skill set of a site operator. Don’t let this list discourage you, if you believe you have what it takes and a facility at favorable location available, why not send us an email with all details that you can provide.

A Site Operator is responsible for the day-to-day operation and security of a single or multi container facility:

  • General experience includes providing day-to-day oversight and management of a facility, acting as the interface between team, local contractors and employees responsible for maintenance and operation of the facility (including electrical systems, mechanical systems, security, and all other aspects of facility operation), and the organizational team responsible for installation and operation of containers. Must demonstrate the ability to work independently or under only general direction.
  • Manages activities concerned with the installation, operation, and maintenance of equipment, utilities, structures, grounds, etc. Ensures building integrity and maintenance of electrical, water, and air systems and other real property. Oversees maintenance of facility grounds/landscaping. Supervises numerous subcontracts. May act as Regional Facilities Manager. Manages and hires staff, contractors, and subcontractors.


  • Requires years of related building maintenance and engineering experience. Supervisory/Management experience.
  • Strong Work Ethic – Responsible and Accountable
  • Strong knowledge of electrical distribution systems
  • Strong knowledge of networking and telecommunication systems
  • Deep Knowledge of data center or mine environments
  • Team Player with an outgoing personality and a strong ability to build interpersonal relationships with customers and across organizational lines
  • Excellent analytical, written, verbal communications, and documentation skills
  • Ability to maintain focus under sometimes stressful sales/business negotiations with contractors
  • Experience in a colocation/datacenter setting desirable
  • Certified HVAC and/or Commercial Electrician credentials desirable