Disaster Recovery

Disaster recovery includes processes and procedures for recovery of critical operations - to resume business soon after the attacks of natural or human-induced disasters. These include: to regain access to data, communications and all other important processes required for normal business functions.

A well-oiled plan requires cooperation organized committee led by a pre-appointed chairman of the experienced. X2y2z a comprehensive plan (DRP) must include a plan to deal with a sudden loss of communication and the possibility of key staff. Disaster recovery planning is part of a larger process known as business continuity planning (BCP).

Continuous data protection (CDP), also called continuous backup, is a storage system where all data is backed up whenever any change is made. CDP acts as an electronic journal of image storage, a snapshot for every instant the data is changed. It is transmitted to each version of data that users store and allows the user / administrator to restore data at any point in time.

A major advantage of CDP is that it records every transaction that occurs within the company. And, if the system becomes infected with a trojan or virus, or if the file becomes damaged and the problem was not discovered until later, it is still possible to get the most recent clean copy of the affected files. Continuous data protection captures data changes in a separate storage location.

Difference from CDP Traditional Reserves

The difference from traditional CDP backup is that you are required to determine the point in time you want to recover until you are ready to do a restore. In traditional backup, you can simply restore the backup data point taken - the CDP, there is no backup schedule. When data is written to disk, once it is written in a second location, usually another computer over a network. This eliminates the need for daily scheduled backup.

Difference from RAID / Replication / Mirroring

CDP difference from housebreaking, mirroring or replication is that it only protects against failure of storage hardware to the latest copy of data protection. If it's a software problem that corrupt data, this technology will only protect the former corrupt data. Continuous Data Protection will protect against some effects of data corruption by allowing the installation to return the version, before the data is not corrupted. However, each transaction that occurs between corruption and the recovery time will be lost and must be returned by journaling or other means.

Backup Disk Size

For many companies, CDP requires less disk space than a traditional backup. Most of the continuous data protection solutions save byte or block level differences rather than file-level differences. This is how you change a byte of a file is 100 GB, only the changed bytes or blocks are supported. Traditional incremental and differential backup make copies of entire file.

Continuous data protection is becoming more widely used as businesses discover the benefits of keeping a journal kept the backup generated from time to time.

With the rise of information technology, where the business is dependent on information critical data, the importance of protecting irreplaceable data has become a business priority in recent years. This is especially evident in information technology, where most companies are dependent on their computer systems as critical infrastructure of their business.

Therefore, many companies have realized the need to backup their data to limit data loss and to aid data recovery. Currently, most large companies spend between 2% and 4% of their total IT budgets on disaster recovery planning to avoid larger losses. Statistics show that businesses that suffered a major loss of computerized data, 43% -51% will never again closed within two years - and only 6% survive long term.

Disaster Recovery Strategy

Here is a list of general strategies for data protection.

Disk backup made on site and automatically copied to off-site disk, or made directly to off-site disk

Created backup tape and sent off-site regularly (preferably daily)

Data replication to off-site locations, which overcomes the need to restore the data (only the system then it should be restored or synced).

High availability system that stores both data and system replicated off-site, enabling continuous access to the system and data

Caution

In addition to the preparation needed to restore the system, organizations must also implement precautionary measures to prevent accidents happening in the first place.

Here's how to avoid disaster and data loss:

Local mirrors of systems and / or data and use of technologies such as RAID disk protection

Surge protector - to minimize the effects of power surges in fine electronic equipment

Interruptible power supply (UPS) and / or backup generators to keep the system running in case of power failure

Fire prevention - more alarms, accessible fire extinguishers

Anti-virus software and other security

For a successful recovery of valuable data, disaster recovery established and tested plan must be established before a disaster happens!