WAFL overhead (reserve) is 10%. Where does 20% come from? ... View more

There seems to be some confusion. In Windows, “user rights” applies to securable object. It specifies, who can do what with this object. It is object (i.e., file) property. There are also privileges. These are attributes of user accounts. There is indeed “take ownership” privilege which allows “to take ownership of an object without being granted discretionary access.” Privileges are attributes of user account and – buy inheritance – running processes on server; which follows, they do not exist and have no meaning on NetApp. So you may set file/directory access rights to take ownership on NetApp, but there is no way to change attributes of user account from within NetApp. Or please explain in more details what you are trying to do. Showing your GPO may be helpful. ... View more

Is there any particular reason vol copy is better than ndmpcopy Probably no. Actually, ndmpcopy is definitely more flexible. Which diagnostics are you referring to here? http://now.netapp.com/NOW/knowledge/docs/hardware/NetApp/diag/html/index.htm We'll definitely zero all the new disks before we use them. New disks are prezeroed so to actually zero them you'll first need to "dirty" them. ... View more

Yes, it is possible – check fsecurity command on NetApp. ... View more

1. NetApp recommends allocating the whole shelf to a head. That is not absolute set in stone requirement. Mixing FC and SAS in one aggregate is supported. In any case – the first priority is sizing requirement – how many disks you application needs. 2. Yes, the procedure to move root volume is correct I’d use vol copy for whole root volume, but it is my personal preference. 3. To be honest, I never actually understood how reallocation is supposed to interoperate with A-SIS; hopefully someone can chime in here. 4. I am not aware of any tests except built-in diagnostics. But it is offline so you lose redundancy for the whole test duration. Other possibility would be create aggregate, destroy it and start spares zeroing. It is not real burn-in, but at least it does write loads all disks. ... View more

FYI:  I've upgraded three FAS 3020s to FAS3140s and snmp is enabled "out-of-the-box". Upgrading hardware does not change exisiting system settings unless you wiped out root volume and performed clean new instalation. Anything that was enabled stays enabled. ... View more

Here is the state after clean installation. Please notice that SNMP init is 0 (inactive): simsim> snmp contact: location: authtrap: 0 init: 0 traphosts: community: ro public ... View more

I wonder what gave you this idea. Filer does not use SNMP for cluster heartbeat. Actually SNMP is disabled by default. ... View more

I do not remember where to do it in GUI, but you can manage it using CLI: sdcli transport_protocol ... View more

Which version do you have? HTTP should be supported as of 6.0 I think. ... View more

Well, access to LUNs does not require SnapDrive at all. But you should be able to go into SD properties and change protocol and credentials. If this won’t work you always can change back. ... View more

You could use HTTP(S) as communication protocol between SD and filer, in this case it is independent of Windows accounts – it will be using filer accounts for authentication. ... View more

EMC claims that their Data Domain product provide real time deduplication at a 4kb block level which they claim to be much more efficient. EMC mentioned that NetApp does dedupliation at around 128kb. THe bottom line is a claim to better performance capabilities. Thoughts? NetApp deduplicates on 4K block level - this is fact. AFAIK DataDomain is using variable block length. Does the curent version o ONTAP utilize SIS or Deduplication? The feature is officially called A-SIS, but everyone is using just Dedupe speaking about it. Both terms are used interchangeably as far as I can tell. EMC claims SIS is a "limited form of deduplication". http://www.datadomain.com/resources/faq.html#q5 NetApp A-SIS works on block level, not on file level. So the above simply has nothing to do with NetApp. ... View more

Together they form single 64 bit value. SNMP v1 defined 32 bit counters only which did overflow easily so this workaround was introduced. Downside is, you need perform some math in your monitoring software to combine these two counters (it was fun when I wrote cacti plugin to do it ☺ ) As of 7.3 (I believe) NetApp supports SNMP v3 with 64 bit counters that makes workaround unnecessary. ... View more

Unless I am mistaken, VMDKmounter is for Windows/CIFS only. The document you mentioned earlier explicitly says: You must have the ability to create a FlexClone of the NetApp SnapShot containing the NFS datastore. This is required because access to the filesystems on the virtual disk files will typically involve some log replay on the ext3 or ReiserFS filesystem. The log replay will require a small amount of data to be written to the virtual disk, which can not be performed if you are accessing the virtual disk in a NetApp read only SnapShot. ... View more

FAS270 head is hot-swappable, but system configuration is kept on root volume, not on controller itself, so swapping them won't buy you anything. If your goal is to provide access to volumes under different IP address, I am afraid the only way is to physically copy volumes to another head. If you have Snapmirror license, downtime can be reduced to several minutes of cutover. ... View more

Additionally if node exports root volume using CIFS/NFS, it is always possible to access /etc/messages and other files even if it is taken over. ... View more

I dare to correct. While it is true that snapshot is always created for full volume, backup software normally allows to select only part of volume (subdirectory) to actually write to media. This is often used to backup large volumes in parallel. So this looks more like BE configuration issue. In any case it is normally not possible to select ~snapshot directory for backup; at least I have never seen it. ... View more

No. The absolute minimum is 2. You do not need spare to run controller. As I already told, I have customers who have been running this way for years. I do not recommend it, but it is doable. ... View more

The absolute minimum is 2 disks. I have customer who runs FAS2070 for 5 years in this configuration ☺ ... View more

The only place where license is mentioned in this thread is when it talks about SnapVault. It does not say anything about SMVI licensing … or I cannot find it ☺ ... View more

Yes. ... View more