Solved

Volumes vs Luns in Netapp storage

Posted on 2014-03-16
4
4,934 Views
Last Modified: 2014-04-19
I have done some reading about Netapp storage, the bark side about it is LUNs and Volumes.
If I understand the steps are :

-- Create an Aggregate (which is one to many physical disks)
-- Create Volumes (Which is one to many virtual disks that can span one to many physical disks created on an Aggregate)

--LUNs …. initially I thought that they were like volumes… still confused.

any explanation will be very much appreciated.

Thanks
0
Comment
Question by:jskfan
  • 2
4 Comments
 
LVL 42

Accepted Solution

by:
paulsolov earned 250 total points
ID: 39933022
Pretty simple really.

Since Netapp is a filer the LUN is a file in a Netapp Volume

So..

Create a Netapp Volume that is somewhat bigger than the LUN so that it can have space for snapshots.  Snapshot reserve should be set to zero

Here's an example for iscsi LUN setup.  If you're doing with for Windows/Linux you can use Snapdrive to make the process much easier.

https://library.netapp.com/ecmdocs/ECMP1196995/html/GUID-ABD4D006-4643-407C-B73F-3B0B5ACC8B27.html
0
 
LVL 16

Assisted Solution

by:Gerald Connolly
Gerald Connolly earned 250 total points
ID: 39933610
My understanding is that a volume is what you map to for CIFS/NTFS, ie a file share, and a LUN is what you map to when using block-level services on the filer.

The aggregate is the underlying RAIDset that provides the storage space for either.
0
 

Author Comment

by:jskfan
ID: 39934078
https://communities.netapp.com/thread/12702

on the above link, the way they explain it is:

from Netapp perspective
Aggregate : is bunch of physical disks
Volume : is like partition that can span multiple physical disks
LUN : is a big file that is inside the volume. the LUN is what gets presented to the host.

from the host perspective:
When the LUN is presented to it as a Disk (D,E,F,etc...) it can be formatted and partitioned by a host..Though I have never partitioned and/or formatted the SAN disk that is presented to to a host…
Most of the SAN disks I have seen , are mapped to hosts and are already partitioned as one big partition and formatted...
0
 

Author Closing Comment

by:jskfan
ID: 40010416
Thank you Guys!
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

A Bare Metal Image backup allows for the restore of an entire system to a similar or dissimilar hardware. They are highly useful for migrations and disaster recovery. Bare Metal Image backups support Full and Incremental backups. Differential backup…
Data center, now-a-days, is referred as the home of all the advanced technologies. In-fact, most of the businesses are now establishing their entire organizational structure around the IT capabilities.
This tutorial will walk an individual through locating and launching the BEUtility application to properly change the service account username and\or password in situation where it may be necessary or where the password has been inadvertently change…
This tutorial will walk an individual through the steps necessary to enable the VMware\Hyper-V licensed feature of Backup Exec 2012. In addition, how to add a VMware server and configure a backup job. The first step is to acquire the necessary licen…

864 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

19 Experts available now in Live!

Get 1:1 Help Now