Recommended distances when selecting/planning a Data Center

In Data Center Design, Site selection is one of the most critical and the very first step out of all the phases. We mainly focus on 2 sub-areas. Natural and Man-made hazards are taken into consideration. Today, we are going to look at a few Man-made objects and the required minimum distances. 

Man-made object Minimum Distance (KM)
Gas/fuel stations 1.6
High-voltage transmission lines 1.6
Airport runaways 1.6
Small lakes & overflow areas 1.6
Railroads 1.6
Large store complex 1.6
Water storage towers 1.6
Canals 3.2
Harbour & ports 3.2
Lakes & dams 3.2
Quarries 3.2
Radar stations 5
Research laboratories 5
Radio/TV stations 5
Embassies 5
Airports 8
Chemical & Power plants 8
Military stations & installations 13
Nuclear plants 80

Understanding SAQ types for PCI DSS

The PCI DSS self-assessment questionnaires (SAQs) are validation tools intended to assist merchants and service providers to report the results of their PCI DSS self-assessment. The different SAQ types are shown in the table below to help you identify which SAQ best applies to your organization. Detailed descriptions for each SAQ are provided within the applicable SAQ.

Type Description
SAQ A Card-not-present merchants. For merchants that outsource their entire card data processing to validated third parties. This includes e-commerce merchants and mail/telephone order merchants. Nearly all online merchants aim for SAQ A, because it is the simplest, least time-consuming assessment.
SAQ A-EP E-commerce merchants who outsource all payment processing to PCI DSS validated third parties, and who have a website(s) that doesn’t directly receive cardholder data but that can impact the security of the payment transaction. No electronic storage, processing, or transmission of any cardholder data on the merchant’s systems or premises. Applicable only to e-commerce channels.
SAQ B Merchants using only:
• Imprint machines with no electronic cardholder data storage; and/or
• Standalone, dial-out terminals with no electronic cardholder data storage.
Not applicable to e-commerce channels.
SAQ B-IP Merchants use only standalone, PTS-approved payment terminals with an IP connection to the payment processor, with no electronic cardholder data storage.
Not applicable to e-commerce channels.
SAQ C-VT Merchants who manually enter a single transaction at a time via a keyboard into an Internet-based virtual terminal solution that is provided and hosted by a PCI DSS validated third-party service provider. No electronic cardholder data storage. Not applicable to e-commerce channels.
SAQ C Merchants with payment application systems connected to the Internet, no electronic cardholder data storage.
Not applicable to e-commerce channels.
SAQ P2PE-HW Merchants using only hardware payment terminals that are included in and managed via a validated, PCI SSC-listed P2PE solution, with no electronic cardholder data storage.
Not applicable to e-commerce channels.
SAQ D SAQ D for Merchants: All merchants are not included in descriptions for the above SAQ types.
SAQ D SAQ D for Service Providers: All service providers defined by a payment brand as eligible to complete a SAQ.

[source: pcisecuritystandards.org]