Hot Site

A disaster recovery hot site is a fully functional backup site, a backup facility that replicates the primary production facility. It includes the software, hardware, and network connectivity as the primary center, and enables real-time backup (data replication) of important data.

• Recovery Time Objective (RTO) is near-zero.
• Recovery Point Objective (RPO) is near-zero

Hot-Site summary:

• fully redundant equipment
• network connectivity is enabled
• failover occurs within hours or days
• near real-time data synchronization
• zero data loss

Warm Site

A disaster recovery warm site is to prepare the standby hardware ready to be used, but backup data must be sent to the site to install.

• Recovery Time Objective (RTO) can be 24-48 hours or more depend on the amount of data.
• Recovery Point Objective (RPO) is based on the most recent backup available. The data lost may be more than 24 hours.

Warm-Site summary:

•   partially redundant equipment
•   network connectivity is enabled
•   failover occurs within hours or days
•   schedule of data synchronization
•   minimum data loss

Cold Site

A disaster recovery cold site is a backup facility with little or no hardware equipment installed. Using a cold site is very limiting to a business since before it can be used, hardware needs to be setup and backup data must be sent to the site to installed.

• Recovery Time Objective (RTO) can be 48 hours to a week. This is because hardware preparation and data installation are required, which depends on the amount of data.
• Recovery Point Objective (RPO) is based on the most recent backup available. The data lost may be more than 24 hours.

Cold-Site Summary:

• little or no equipment
• no network connectivity
• not ready for automatic failover
• no data  synchronization
• high risk of data loss"

Rack Co-location

Provide rack space for store customer’s own server equipment in data center, with physical monitoring service