IBM Mainframe Forum

hi i new to the the mainframe environment.....

i wanted to know the infromatiion about

What is MVS?
can u given an clear idea regarding this in mainframe environment...
how the data in is stored in mvs...

waiting for your reply

thanks in advance

Hello and welcome to the forum,

What is MVS?

The most-used (counting numerous upgrades) operating system on an IBM mainframe.

can u given an clear idea regarding this in mainframe environment...

Probably not. The forum is not the place for such an encompassing question. For one definition, you could look at wikipedia.

how the data in is stored in mvs...

Too many ways to go into here. Not only are there many "ways" to store data, there is also different kinds of media. These are not "hot-switchable" like usb devices on the pc.

What is it you really want to know?

The current IBM mainframes are direct descendents of the original System/360 that was first marketed in 1964. You are asking about an architecture that is over 45 years old at this point. Over the years, it has expanded quite considerably, and the complexity is amazing. A typical mainframe supports hundreds -- or thousands -- of people using it simultaneously for a wide variety of tasks. You will need to clarify your questions quite a lot before you will receive answers that could be intelligble.

Multiple Virtual Storage. This is in reference to the fact that individual address spaces in MVS share common storage addresses. It was a growth on Single Virtual Storage, where there was a single 16-megabyte virtual storage space, and SVS was a growth over a real memory OS/360 MVT. which was a real storage only system.

Other common mainframe operating systems are z/VM, and z/VSE.