What is a LUN, and why do we need one? |
 |
EXPERT RESPONSE FROM: Randy Kerns
|
|
|
| > |
QUESTION POSED ON: 20 July 2004
What is a LUN? Why do we have to create LUN, rather use the disk as it is?
|
|
|
To continue reading for free, register below or login
To read more you must become a member of SearchStorage.com
A LUN is a Logical Unit Number, which is really a logical volume. The operating systems and the software on them operate against a logical volume and view it as a linear address space of fixed size blocks. A physical disk can be set up to be one large LUN or carved up into multiple LUNs. In addition, you can add software into the program stack called a Logical Volume Manager that will take LUNs or parts of LUNs and logically combine them using software tables and pointers to virtualize a LUN. So you can use the disk as is, but it is defined as a single large LUN in that case.
Read Greg Schulz's answer to this question.
|
|
|
|
|
|
|
|
Search and Browse the Expert Answer Center
Search and browse more than 25,000 question and
answer pairs from more than 250 TechTarget industry experts.
|
|
|
|
|
|
|
|
|
|
|
|
