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Clean rooms are essential in the data recovery field, protecting sensitive hard drives and other Electronic components from dust and contaminants that can affect the data recovery process. The following are key steps and important considerations for creating A Clean Room for data recovery.
Determine the clean room grade and standard
First, determining the modular clean room grade is the first step in creating a data recovery environment. According to the international standard ISO 14644-1, clean rooms are divided into multiple grades, each with a different number of particles allowed. For data recovery, it is generally recommended to use a clean room of ISO5 or higher to ensure the lowest possible contaminant concentration.
ISO5 Maximum allowable concentration is 3,520 particles/m³ at 0.5 micron particle concentration.
ISO4 More stringent environmental requirements, with a maximum of 1,000 particles/m³ at 0.5 micron particle concentration.
Calculation formula The cleanliness level of the clean room can be calculated by the following formula:
Where C is the maximum number of particles per cubic meter, N is the total number of particles, and V is the indoor volume (m³).
Design and layout of the clean room
During the data recovery process, hard disk head damage is a common fault. Dealing with such problems usually requires opening the hard disk, including replacing the head or performing data recovery in a dedicated environment. This requires a dedicated, standard-compliant clean space, namely the data recovery clean room.
Laminar flow system After air is filtered through HEPA or ULPA filters, it is evenly distributed in a laminar flow manner to reduce the risk of contaminant retention.
Space layout Equipment should be arranged in the center of the clean room to reduce interference with air flow. Clear work areas and preparation areas should be set to avoid cross contamination.
Clean channel Design a one-way personnel channel to ensure that the flow between staff and equipment does not interfere with each other and reduce the introduction of pollution sources.
Proper ventilation and air filtration system
The data recovery clean room consists of several key parts, including a purification clean unit, which is responsible for removing particles from the air; air shower equipment, which is used for air purification when personnel enter and exit; and a dust-free purification clean workbench, which provides a dust-free environment for operation. The cleanliness level of a clean room is its important characteristic, which is usually measured by the number of dust particles per unit volume, and is divided into ten, one hundred, one thousand, ten thousand, etc. The lower the level, the higher the cleanliness. The inside of the hard disk cavity is extremely sensitive to dust. Therefore, the cleanliness of the data recovery clean room required at the time of opening is far higher than the medical grade dust-free standard.
Temperature and humidity control
The control of temperature and humidity is crucial to the stability of the clean room. Appropriate temperature and humidity can effectively avoid the influence of static electricity and other environmental factors on the data recovery process. It is usually recommended to be between 20-22°C and the humidity is maintained at 30%-60%.
The state has strict regulations on this type of cleanliness, stipulating that "≥0.5 micron dust particle number" and "≥5 micron dust particle number" are used as measurement standards. Standard data recovery cleanrooms are usually rated from Class 1000 to Class 10000.
Temperature control Maintain at 20-22°C to prevent heat damage to electronic components.
Humidity monitoring Relative humidity should be maintained at 30%-60%. Too high humidity may cause circuit short circuits, while too low humidity may increase static electricity.
Monitoring equipment Use high-precision temperature and humidity monitoring instruments to monitor and record data in real time to ensure that environmental conditions meet requirements.
Maintenance and Monitoring procedures
Regular maintenance and monitoring are important measures to ensure the long-term effectiveness of modular cleanrooms. Establishing a detailed maintenance plan and monitoring procedure will help to identify problems in a timely manner and take corrective actions.
Filter replacement HEPA and ULPA filters should be replaced every 6 months to ensure filtering effectiveness.
Particle monitoring Perform particle count monitoring once a month to ensure that the number of particles is within the qualified range.
Data recording A regular recording system needs to be established to retain temperature, humidity, particle count and maintenance records for review and improvement.
Personnel training and management
People working in clean rooms need to undergo systematic training to ensure that they can follow operating procedures and minimize the risk of contamination. The training content includes how to wear clean clothes, gloves and other protective equipment.
Training content Including clean room operating procedures, pollution source identification and treatment, and emergency response measures. Ensure that all employees understand the importance of clean rooms and know how to effectively prevent contamination.
Wearing specifications All personnel entering the clean room must wear special clean clothes, hoods, masks, gloves and clean shoes to prevent any particles on the body from entering the room. Pay special attention to the cleanliness of the hands, and ensure that you wash your hands thoroughly and use clean gloves before entering the clean room.
Entry and exit management Establish a strict entry and exit management system. Personnel should pass through the air shower or air shower equipment when entering and leaving the clean room to remove dust attached to the outside. Equipment and tools that are newly entering the clean room should also be cleaned and disinfected to ensure that no external contamination is introduced.
Regular evaluation Regularly conduct employee training and assessment to ensure that all employees are proficient in the operating procedures of the clean room, and update the training content in a timely manner to follow the latest clean room operating standards and technical requirements.
Ending: Relevant standards and specifications
Establishing and maintaining an efficient clean room requires not only careful design and construction, but also compliance with a series of standards and specifications to ensure its effectiveness and safety. The following are some important international standards and specifications for reference in the construction and management of clean rooms:
iso 14644-1 The cleanliness level standard for clean rooms and related controlled environments specifies in detail the number of particles allowed in clean rooms of different levels.
iso 14644-2 Specifies the monitoring procedures and methods for clean rooms and related controlled environments to ensure the continuous compliance of clean rooms.
FDA 21 CFR Part 11 Regulations involving electronic records and electronic signatures to ensure the integrity and security of data, especially applicable to the data recovery industry.
GMP (Good Manufacturing Practice) Cleanroom standards for the pharmaceutical and medical device industries, emphasizing the standardization of operations and the cleanliness of the environment.
ANSI/ISA 71.04 Specifies the environmental conditions for electronic equipment, especially for the environmental requirements in the data recovery industry.
By following the above standards and implementing effective management and maintenance measures, it can ensure that the cleanroom provides a safe, reliable and efficient environment for data recovery, thereby improving the success rate and efficiency of data recovery.
