Hi vkumar14,
That message seems to be telling you that there’s some kind of disk space limit on your hosting server or perhaps a RAM limit (it’s hard to know if they’re using RAM disk or not).
I would contact your hosting company and see if you are hitting some kind of space limits. If you’re on a “shared hosting” account with “unlimited space”, unfortunately this is a huge lie they tell to most customers to get them to buy into a cheap plan. There are limits and you can (and probably will) run out of space on a shared machine.