Need some Redhat help

[CowboyTroy]

Hey everyone,

First, I have no experience with linux so some of my terminology may be off.

My supervisor at work has me doing research on OS's and some of the info he needs is on Redhat Linux 4 and 5. What he is looking for is below:

-Maximum LUN size of operating system. (Single LUN)
-How to overcome the LUN size limit.
-Does the operating system support dynamic LUN sizing?
-Best Practice/Performance


Thats what he is looking for. I have found it for every other OS except Redhat. If my questions are to vague let me know and I can try to clarify.

Any help would be greatly appreciated!!

Thanks!

[Rubberman]

1. Maximum LUN (file system) size is dependent upon the file system being used. The commonly used ext2/ext3 file systems have a 32TB limit. Other file systems can support exabyte size file systems.
2. File systems can span multiple discs/arrays using the Logical Volume Manager (LVM). Volume groups managed by the LVM can be resized.
3. What do you mean precisely by "dynamic LUN resizing"?
4. Best practices/performance depend entirely on your specific application mix and needs. A database server will be configured considerably differently from a virtual machine host for example.

[CowboyTroy]

Thanks for the response!

By dynamic LUN sizing I meant is it possible to resize a LUN without losing the data or having to reboot?

Something like how extending or shrinking a partition works in windows.

[CowboyTroy]

Can anyone help me with this.

Pointing me some documentation would also be off great help.

[Rubberman]

- The Linux Documentation Project
- The Linux Foundation
- HowTo's on various Linux distribution sites such as www.centos.org - The Community ENTerprise Operating System