New Features in RHEL6 

1. ext4 file system is introduced.
2. xen is removed and kernel virtualization machine (KVM) is introduced.
3. neat command is removed.
4. portmap service is removed.
5. iscsi is introduced, which supports for SAN.
6. rpmbuild is available, which is used to create our own rpms.
7. File encyption is added.
8. palimpsest is available for disk management.
9. Virtual machine will run only on 64bit processors.
10. postfix service is recommended instead of sendmail service.
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