What is the purpose of clustering of data in a file?

Related questions

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2. How do filesystems work?
3. What is the best format for USB?
4. How big is a cluster?
5. Will NTFS be replaced?
6. How many clusters are needed for the file?
7. What is difference between ext2 and ext3?
8. What is a cluster file?
9. What is RAID 5 write hole?

Tags

1. #performance
2. #store
3. #purpose
4. #method
5. #tuples
6. #cluster
7. #database
8. #relations
9. #storing
10. #other
11. #clustering
12. #speed
13. #close
14. #types
15. #physically
16. #queries
17. #certain