Data archiving
Data archiving is the process of compressing and organizing long-term storage of rarely used data to free up disk space and ensure preservation.
Contents
What is data archiving
Data archiving is a comprehensive process including two key aspects: compressing information to reduce the occupied volume and organizing long-term data storage. Unlike backup, which creates copies for rapid recovery in case of failure, archiving primarily frees up valuable disk space and structures information chaos.
Archiving is used in corporate document flow systems and electronic archives. In state information systems and at critical information infrastructure (CII) facilities, archiving must comply with strict requirements using cryptographic information protection tools (CIPF).
Main data archiving methods
- Full backup — the most reliable but resource-intensive.
- Incremental backup — saves only changed data, fastest.
- Differential backup — an intermediate option.
In backup systems a combination of methods is often used.
Modern archive formats
- ZIP — universal standard.
- RAR — higher compression.
- 7Z — high compression using LZMA2.
- TAR.GZ — common in Unix/Linux.
Archiving tools
7-Zip, WinRAR, built-in Windows tools, corporate backup systems (RBS).
Archiving and cybersecurity
Archives stored in an isolated environment become the only way to restore information without paying a ransom. The 3-2-1 rule is recommended: three copies on two different media types, one offsite.
Frequently asked questions
How is data archiving different from backup?
Archiving frees up space for long-term storage. Backup creates copies for recovery after a failure. The processes are often combined in backup systems (RBS).
Which archiving method should a business choose?
A combined strategy is optimal: full backup weekly, incremental daily. For rapid recovery, the differential approach is preferable.
Which archive format is most reliable for long-term storage?
ZIP or 7Z — open formats guaranteeing future readability. Use lossless compression and check integrity with checksums.
How do I protect archives from ransomware?
Use CIPF encryption, the 3-2-1 rule and WORM protection in backup systems.
Does compression affect recovery speed?
Yes, high compression (LZMA2 in 7Z) requires more time to unpack. For critical data, ZIP is often chosen to reduce RTO.
What problems arise during archiving in distributed systems?
Data transfer speed and consistency. Deduplication, client-side compression and specialized protocols are used.
How long does archiving terabyte volumes take?
From several hours to a day depending on file type, disk performance and compression. Automation via backup systems runs processes at night.
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Data archiving
Data archiving is the process of compressing and organizing long-term storage of rarely used data to free up disk space and ensure preservation.
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