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* SGI's filesystem (1994) that was ported to Linux around 2001 | * SGI's filesystem (1994) that was ported to Linux around 2001 | ||
* no 16 TB limitation; max size is 8 Eib (1 exbibyte = 2^60 bytes) | * no 16 TB limitation; max size is 8 Eib (1 exbibyte = 2^60 bytes) | ||
* no compression and checksumming (data-integrity) features | * no data compression and checksumming (data-integrity) features. It does have metadata checksums. | ||
* the default for RHEL starting at version 7 | |||
* | |||
== ZFS == | == ZFS == | ||
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* background checksumming and self-healing for data integrity | * background checksumming and self-healing for data integrity | ||
* Built-in stripes (RAID-0), mirrors (RAID-1) and RAID-Z (it's like software RAID-5, but more efficient due to ZFS's copy-on-write transactional model) | * Built-in stripes (RAID-0), mirrors (RAID-1) and RAID-Z (it's like software RAID-5, but more efficient due to ZFS's copy-on-write transactional model) | ||
* there | * triple parity raid (raidz3) has been added to ZFS [http://blogs.sun.com/ahl/entry/triple_parity_raid_z] | ||
* the source code license of ZFS is incompatible with the GPL of the Linux kernel, therefore | * there is a port of ZFS to FreeBSD | ||
* | * the source code license of ZFS is incompatible with the GPL of the Linux kernel, therefore not in the latter | ||
* install from http://zfsonlinux.org/ | |||
== Ext4 == | == Ext4 == | ||
* | * ext4 is based on ext3 (same developers) | ||
* | * default of some Linux distros | ||
* no 16 TB limitation; max size is 1 EiB (1 exbibyte = 2^60 bytes) | * no 16 TB limitation; max size is 1 EiB (1 exbibyte = 2^60 bytes) | ||
* no compression and checksumming (data-integrity) features | * no compression and checksumming (data-integrity) features |