Unfortunately most of clients use SMB 2.x.

 

Da: Francis Kim [mailto:fkim@BERKCOM.com]
Inviato: mercoledì 29 luglio 2015 17:05
A: Milazzo Giacomo <G.Milazzo@sinergy.it>
Cc: Toasters <toasters@teaparty.net>
Oggetto: Re: NDO & CIFS

 

I was also excited to hear about general NFS-like NDU possibilities for CIFS clients when cDOT8.2.1 came out with SMB3.0 support.  The reality is that this capability has limited uses (Hyper-V, SQL Server), due to the additional overhead required to store and replicate persistent handle information (key to the NDU function) between nodes in an HA pair.  I take that to mean, go ahead and use this feature if your share has a handful of files, but not if it has millions, typical of most file shares.

 

Here’s a TR that does a pretty good job of discussing the details under the cover, with a specific recommendation to only use this on Hyper-V over SMB shares.

 

http://www.netapp.com/us/media/tr-4172.pdf

Francis Kim

Direct:

510-644-1599 x334 

Cell:

415-606-2525

 

BerkCom | www.berkcom.com

NetApp | Cisco | Supermicro | Brocade | VMware

 

On Jul 29, 2015, at 3:26 AM, Milazzo Giacomo <G.Milazzo@sinergy.it> wrote:

 

Hi all,

 

with cDOT is there a way to avoid that CIFS sessions fall during a takeover?

In 7 Mode when an NDU operation is performed CIFS must is interrupted and open CIFS sessions fall if not closed before.

Is there a way using failover groups of the data LIF to avoid this?


Regards,

 

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