Solaris Admin - What is the difference between UFS and VXFS and advantages of VXFS?

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What is the difference between UFS and VXFS and advantages of VXFS?

Total Answers and Comments: 3

Last Update: December 10, 2007 Asked by: suman.solaris

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October 18, 2007 04:53:19

kovelkar

RE: What is the difference between UFS and VXFS and ad...

UFS is Unix Native File system..It will support max 1 Terrabyte volume
VXFS is Veritas File system. Its third party software..from veritas ( Adopted by Symatec). It will support the vloume size more than 1 TB. For VXFS fsck is not reqiure ..

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November 07, 2007 04:12:02

jaykanthk

Member Since: November 2007 Contribution: 15

RE: What is the difference between UFS and VXFS and ad...

UFS :- UFS is having limited inodes. UFS is u can't increase and decrease the volumes and filesystems VXFS:- VXFS is having lot of inodes. VXFS is u can increase and decrease the volumes and filesystem at a time online.

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December 10, 2007 13:59:56

Amit Shiknis

RE: What is the difference between UFS and VXFS and advantages of VXFS?

Please have a look at following table for detailed technical specifications for VXFS and UFS file systems-

Feature	XFS	UFS	VxFS	NTFS
Max FS Size	18 million TB	1 TB	1 TB	2 TB
Max File Size	9 million TB	1 TB	1 TB	2 TB
File Space Allocation	Extents	Blocks	Extents	Extents
Max. Extent Size	4 GB	NA	64 MB	Undoc’d
Free Space Mgmt	Free extents organized by B+ trees	Bitmap per cylinder grp	Bitmap per allocation unit	Single bitmap
Variable Block Size?	512 bytes to 64 KB	4KB or 8KB		512 bytes to 64KB (4KB w/ compression)
Sparse File Support?	Yes	Yes	No	NT 5.0
Directory Organization	B+ Tree	Linear	Hashed	B+ tree
Inode allocation	Dynamic	Static	Dynamic	Dynamic
Crash Recovery	Asynch. Journal	Fsck*	Synch. Journal	Synch. Journal
Maximum Performance	7GB/sec 4GB/sec (single file)	Not Available	1GB/sec	Not Available

Thanks
Amit Shiknis

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