Why unix system V has a filename size limit of 14 characters.How other versions of Unix got around this problem.Can anybody help?

The original Unix filesystem had a limitation of 14 characters. Other versions of Unix used different filesystems with much larger limitations. A very few people actually liked that 14 character limit. To accommodate them, some versions of Unix allow you to force this limit artificially. For example, HP-UX allows a -S flag when creating a UFS filesystem. And they have a convertfs command to take a one-way trip into longer filenames. Other versions of Unix may have something like that too. But if your version of Unix is still using the old filesystem, you probably have no way around it except to upgrade to a more modern version of Unix.

Why was that limited to 14 characters.That has something to do with inode and storage considerations.Help me

Ken Thompson thought is was an acceptable limit. He could have made it 15 or 16 just as easily. Or 12 or 13. There was nothing magical about 14. In the early 70's 14 seemed like a lot for a filename.

Wont the increase in filename size decrease the stroage limit of filesystem.?

Space allocated to filenames is not available for file data, but that's always true. What are you really asking these questions for?