Tuesday, July 12, 2011

Die Cutting

Die cutting (shearing), is a process which cuts stock without the formation of chips or the use of burning or melting. If the cutting blades are straight the process is called shearing.
The above shown a PVC card die-cutting machine.

Card Printing Technologies

Xerography (or electrophotography) is a dry photocopying technique. It combined electrostatic printing with photography. Xerography is used in most photocopying machines and in laser and LED printers.

The DCT-Pro technology allows the digitized colour image of the portrait to be chemically transferred onto the inner layer of the card, underneath the security printing.

Dye Diffusion Thermal Transfer (D2T2)
process employs a set of ribbons that are coated with a dye that is transferred to the receiver sheet by the application of heat and pressure from a stylus at a discrete point. The dye will sublimate and migrate to the substrate, where it will be chemically bound in a receptor coating. Other Given Names: Thermal Dye Sublimation, Dye Sub, Thermal Dye Transfer (TDT).

The Argonite System

Argonite is an excellent fast acting fire extinguishing agent that is environmentally neutral, safe for occupied areas and leaves no residue.

Argonite systems have been developed as a viable and environmentally friendly alternative for Halon. Tested and approved by regulatory bodies throughout the world, Argonite is effective against fires involving almost all combustible materials and flammable liquids and is particularly suitable for use in areas where the use of water, foam or powder would be unacceptable.
The Argonite fire suppression system uses an inert gas that offers effective fire protection with zero environmental impact. It is a simple blend of 50% Argon gas and 50% Nitrogen gas with a density similar to that of air. Both Argon and Nitrogen are clean, natural gases that are readily available throughout the world. Argonite is safe and effective for use on many applications—it is well suited for leak enclosures such as flight simulators, substations, and control rooms and for application with multiple hazards.

Friday, July 8, 2011

HP Enclosure (Chassis) C3000 vs C7000

Implementing Cluster at Branch Level

It is recommended to have an external storage if we are to implement cluster at branch. Below is a case study.
From the above situation, record D15 is being written onto DB Server 1 but not DB Server 2 due to lost connection. When a request to search D15 is being received, DB Server 2 returns result NOT FOUND which in fact it should have.  Hence, to avoid inaccuracy, an external storage is recommended so that it points to that data in the storage rather than relying on server disk.
The current storage being recommended for branch cluster is HP StorageWork MSA60 Array, 8 x 300GB 6G SAS HDD  - around USD15,380*
This storage can cater for up to 24TB. Further details:
Other necessities for clustering:
Operating System:
DBMS:
  • Microsoft SQL Server 2008 Enterprise Edition – Cluster 
  • Microsoft SQL Server 2008 CAL License
*Prices are not fixed. Please get latest quotation from vendor.