常見文件系統:

常見文件系統:
EXT4(Linux)/XFS(SGI)/JFS(IBM)/Btrfs(Oracle)/ZFS(SUN)/ReiserFS/HFS+(Apple)/NTFS(MS)/FAT32(MS)/exFAT(MS)
蘋果沒有采用ZFS的緣由分析:
ZFS須要佔用大量的內存來實現文件系統操做,目標用戶是大企業的工做站和服務器,不適用iOS設備.另外SUN被Oracle收購,Oracle又長期投資ZFS的競爭產品Btrfs,因此蘋果可能以爲ZFS的前途不明朗.
http://www.ilsistemista.net/index.php/linux-a-unix/40-ext3-vs-ext4-vs-xfs-vs-btrfs-filesystem-comparison-on-fedora-18.html
ilsistemista的測試得出的結論仍是很客觀的:
However, some obvious recommendations emerge from the observed patters:
一、If you plan to use MySQL or PostgreSQL, use EXT4 as you can not go wrong with it. However, stay away from BTRFS;
二、For large file installation (as VM hosting system) or direct I/O, go with XFS.
BTRFS shows some big improvement that are remarkable. 
However, I will not use it for critical data as it and its fsck are relatively young.
簡單說,就是數據庫應用建議使用EXT4,大文件應用(虛擬化)建議使用XFS(從RHEL7默認文件系統爲XFS可側面驗證其正確性),而BTRFS的確有了很大的提高,但不建議應用在關鍵數據上.