- Complicated model of Logical interfaces spreading around away from
vServer
Right. really a non-issue. In fact, you can impliment on-board load-balancing between lifs. Really handy. Turn on NFSv4 and PNFS and now you even get direct data path. (all nodes handle meta-data, redirects client to most efficeint data path) In 7-mode, you still have a interface for data per node. Same in cDOT. You just have a LOT more flexibility on how to use them. Need to do maintenance? Migrate the lif to another node. I just did this to turn on jumbo frames and test. Works great.
--tmac
*Tim McCarthy* *Principal Consultant*
Clustered ONTAP Clustered ONTAP NCDA ID: XK7R3GEKC1QQ2LVD RHCE6 110-107-141https://www.redhat.com/wapps/training/certification/verify.html?certNumber=110-107-141&isSearch=False&verify=Verify NCSIE ID: C14QPHE21FR4YWD4 Expires: 08 November 2014 Current until Aug 02, 2016 Expires: 08 November 2014
On Wed, Nov 6, 2013 at 7:54 PM, Scott Miller Scott.Miller@dreamworks.comwrote:
On 11/06/2013 03:37 PM, Iluhes wrote:
I can think of many things that would clearly annoy me:
- Not having flat files to manage and quickly modify, quotas: exports,
rc, Running config commands potentially much more dangerous then
bothered me at first, too, but the CLI is rich, and the API is getting there. Also take a look at Work Flow Automator as a way to do repetitive tasks.
- RSH? Can I run RSH commands?
you can ssh commands, passwordless (once you set up the proper keys)
- No separate exports for qtrees
there is, as of cDOT 8.2.1.
- Not clear how to access log file of the cluster....mounting root
share not possible, right? only for vServer..
"event log ..." commands
- No local user authentication mode for cifs vServer
We use AD. I suspect its on the roadmap, though, as I see a cifs option called "Is Local Auth Enabled" that sounds intriguing.
- Complicated model of Logical interfaces spreading around away from
vServer
not been an issue for us.
- ".admin" in NFS mount path ....Common...
how is this an issue?
- Anti-virus?
soon.
FWIW, we've been a cDOT (formerly known as "GX") user since 2006. Initially GX was put in-place for scaleout HPC file service, and its stayed around in that role ever since. Now that the data protection features (snap mirror, snap vault) are available, we're migrating to as much cDOT as possible.
Why?
Vol move, aggregate relocate, LIF migrate and the fundamental ability to do all system currency tasks, resource balancing, add and remove hardware and OnTap upgrades without service disruption.
With our 7-Mode fleet, when a controller is saturated, a downtime is needed to move a volume to another controller or aggregate. Its a short-downtime usually, but still requires stopping file service access to that data set.
With cDOT, I can do every one of the common operational and systems currency tasks we do, without disrupting clients.
Totally worth it.
As for migration, our model is to migrate as Systems ReCap and projects start, over the next year or two. There will be service interruptions as data sets move from 7-mode to cDOT, but once in, there should be no disruptions for access to that data set for the rest of its lifetime.
-skottie
On Wednesday, November 6, 2013 4:01 PM, John Clear jac@panix.com wrote: On Wed, Nov 06, 2013 at 12:25:17PM -0800, Iluhes wrote:
Netapp is pushing hard to start using Cluster Data ONTAP. From what I see, from admin/operator level is not as elegant and friendly as "Classic". I just cannot see going to it, it goes against almost everything I like about administrating netapp. Do people feel the same way out there is the field? Netapp is telling us that 7-mode will go away. Is that for real? Do you "like" Cluster OS?
Prior to 8.2, we were only implementing CDOT where we needed the extra performance of all the nodes appearing as a single system, or the ability to migrate volumes between nodes.
With the release of 8.2, all the features of 7-mode that we use are supported in CDOT. The main one for us was Snapvault, but QOS is also a plus. We are not installing any more 7-mode filers.
CDOT is still a bit rough around the edges, but administering it in some ways is easier than 7-mode. When I have to work on our 7-mode systems now, I find myself missing tab completion, wildcards and global commands.
YMMV,
John
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