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mpalumbo1

50 Posts

10609

May 1st, 2009 12:00

Max size of NFS/CIFS

What is the max size that a NFS or CIFS share can be? I have read that there is no limit and that these mount sizes can be grown the max capacity of the storage on the back end but I need confirmation.

Thanks,

Mike

nandas

1.5K Posts

May 1st, 2009 18:00

Hi Mike,

The max size is depended on the File system size - the NFS Export or CIFS share is created on a file system and thus technically share does not have a size.

Coming to File system size - the max FS size depends on the Celerra Model and NAS code that you are running - for most of the cases the limit is 16 TB.

For NS20/40/80, NSX, NS4, NS120/480/960, NS-G8 the limit is 16 TB.
NS500 - 8 TB (5.5 or 5.6 code)
NS350 - 10 TB (5.5 or 5.6)
NS600 - 8 TB
NS700 - 16 TB (5.5 or 5.6)

However, please note that any such large file system will have more overheads, longer file system check time, more backup/recovery time etc.

Hope this helps,
regards,
Sandip

qq11

10 Posts

May 3rd, 2009 03:00

Hi,
does it mean that in case of panic/fail over it will take longer for the system to be available when using larger file system?

10x,

dynamox

1 Rookie

 • 

20.4K Posts

May 3rd, 2009 22:00

it depends, even though it's journal file system, if datamover happens to panic it will need to run fsck. You might have a 50G file system but if it contains millions of tiny little files it will take some time to run.

mpalumbo1

50 Posts

May 7th, 2009 12:00

I have another question relating to this; is there a Max File size? One of my Vmware guys is worried if there is a file size limit. So his question is since the max size of a NFS mount is 16 tb can he fill that TB mount with 1 file? Not that he would do this but he just wants to know if there are any file size restrictions for mount points.

Thanks,

Mike

BillStein-Dell

Moderator

 • 

284 Posts

May 7th, 2009 12:00

The max file size is 16 TB, unless you have the filesize policy turned on in quotas, in which case the max file size is 4 TB. These are hard limits; the system will not allow you to make a file larger than these. Currently, though, the max file size matches the max filesystem size, so you can fill your entire filesystem with one file.

Rainer_EMC

8.6K Posts

May 8th, 2009 04:00

actually a file filling a 16TB file system would be a tad smaller than 16TB since the system needs space for fs metadata :-)
should be 1-2 %

BillStein-Dell

Moderator

 • 

284 Posts

May 10th, 2009 16:00

oh, fine, splitting hairs again. He gets the general idea. :-)

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