On the implementation of ZFS (Zettabyte File System) storage system

Abstract

Digital data storage is very critical in computer systems. Storage devices used to store data may at any time suffer from damage caused by its lifetime, resource failure or factory defects. Such damage may lead to loss of important data. The risk of data loss in the event of device damage can be minimized by building a storage system that supports redundancy. The design of storage based on ZFS (Zettabyte File System) aims at building a storage system that supports redundancy and data integrity without requiring additional RAID controllers. When the system fails on one of its hard drive, the stored data remains secure and data integrity is kept assured. In addition to providing redundancy, the ZFS-based storage system also supports data compression for savings on storage space. The results show that the ZFS with LZ4 compression has the highest read and write speed. For real benchmark, there is no significant difference in reading speed for a variety of different variables, whereas a significant increase in speed occurs when writing compressible files on the ZFS system with compression configuration.