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Forum Discussion
iSCSI LUN 350Gb more used space 600Gb !
Hello, I created a 350GB iSCSI volume on my ReadyNAS firmware 6.2.4. But I see the space used is actually 600Gb. Is this normal?
Are you using snapshot protection?
What is the LUN being used for?
What's snapshot protection ?
My LUN is connected to Windows 2008 R2 for disk volume.
cerede2000 wrote:
What's snapshot protection ?
Read chapter 5 of the manual (http://www.downloads.netgear.com/files/GDC/READYNAS-100/readynas6.2_11March2015.pdf)
Thanks :)
No, snapshots is not used.
This could happen if you have fragmentation on your LUN.
For instance, you can have an unlimited number of extents on a file. Theoretically, a million extents could equal maybe a terabyte of fragmentation.
What kind of LUN are you using -- thick or thin?
Thin LUNs inheritently will fragment because it is a file that builds on to an existing file. A Thick LUN preallocated all the data and then adds to existing extent trees.
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