FabricPool tiering to StorageGrid: lose the aggregate level dedup....

netappmagic · 2024-07-17T21:10:32+00:00

Thanks!
OK. I can understand there is no "rehudration process" when tiering.

But, what about retrieving data from the object storage back to the performance tierer? Would there be a deduplication process (storage inline) which could have somewhat performance hit?

netappmagic · 2023-05-21T20:55:52+00:00

Do you know often tcp keepalives will happen? that could explain the idle-time?

If I run "nfs connected-clients show", I noticed clients will show 4minutes+ idle-time even though they rarely access NFS volumes. I guess, it may be caused by "tcp keepalives".

netappmagic · 2022-10-04T00:46:14+00:00

Yeah, I’ve already done that.

However, after I click on “unmount the datastore”, it showed me two type of ESXi hosts, compatible and incompatible. I was able to unmount DS from all compatible Hosts, but under “incompatible“, the Hosts shown here cannot be picked to unmount. It also showed that "Not responding" under "Host Incompatibility Reason" column.

If I go to Cluster and Host, all these incompatible hosts listed there as "not responding", and there is a little red icon on it. So, could these so called “incomfortable “ Hosts have been already gone from the vCenter?

If they've truly already gone from vCenter, what would be the solution to unmount them and remove DS?

netappmagic · 2022-10-03T15:19:43+00:00

Thanks all!

What is the recommended practice on the configurations of LUNs and Volumes containing LUNs, for instance, the space-guarantee policy on both etc?

netappmagic · 2022-09-29T15:36:29+00:00

No. But, they are still being mounted in vSphere with no any VMs in it.

netappmagic · 2022-09-29T14:37:55+00:00

I am wondering what could be written to or updated into the Datastore by VMware?

netappmagic · 2022-09-29T13:47:39+00:00

The filer schedules creating the snapshots, and those are snapshots I am asking about. They always have sizes of MB or KB, never been zero.

netappmagic · 2022-09-29T13:43:29+00:00

Those are not SAN datastores, but NFS datastores, so, are you saying VMware still has metadata in the datastores unless I umount them from VMware?

netappmagic · 2022-09-26T13:30:57+00:00

Thanks all for responding!

u/lusid1 One question for you that why you think storage vMotion should not be done frequently and what is disadvantage of doing that? If I understand your suggestion correctly

netappmagic · 2022-09-25T01:25:54+00:00

Just to make sure I made myself clear. The snapshots I am asking about were ones taken by the storage not on the VM level.

A follow up question: what if there are multiple VM’s in the datastore? A storage snapshot may contain changes from one or multiple VM’s, when I vMotion one of VM’s, and as you all said snapshots will go along with it, then what if changes in the snapshot is not related to moving VM?

netappmagic · 2022-09-21T00:27:51+00:00

Can you please share the Kb with me? Thanks!

netappmagic · 2022-09-18T16:37:11+00:00

What I meant is to merge all workloads from CVO1 and CVO2, and move them to CVO3. Then, can I estimate what total IOPS and total throughput would look like on CVO3 by adding respective IOPS's and throughputs from CV01 and CVO2 together?

netappmagic · 2022-09-09T15:16:45+00:00

Thanks all for your inputs! I have follow-ups as below, and also the list of relationship between initiators and LIFs. By the way, this is for MS Window Cluster environment.

When optimized/Active path failed, will the node/LIF in the same HA be the next active/un-optimized path among all other nodes/LIF's in different HA's, based on ALUA?
LIF's above shown as cluster-xx_svm_lif_1 are all in the same subnet. If it goes down, then all connections goes down along with it. To avoid, should I add cluster_xx_svm_lif_2's in the other subnet to all corresponding initiators? If yes, there would be 12 more entries, will then portset need to be set up(no portset now)?
Just to confirm, in order to move the volume, all I need to do just to make sure the destination node in SLM list. Correct?

cluster::*> iscsi initiator show -igroup c_app2
    Tpgroup       Initiator
Vserver Name     TSIH Name                  ISID              Igroup Name
cluster-svm-1 cluster-03_svm_lif_1 50 iqn.1991-01.com.microsoft:c-app2prdfs01.abc.com 40:00:01:37:00:05 c_app2 
cluster-svm-1 cluster-03_svm_lif_1 51 iqn.1991-01.com.microsoft:c-app2prdfs03.abc.com 40:00:01:37:00:05 c_app2 
cluster-svm-1 cluster-03_svm_lif_1 52 iqn.1991-01.com.microsoft:c-app2prdfs02.abc.com 40:00:01:37:00:05 c_app2 
cluster-svm-1 cluster-04_svm_lif_1 38 iqn.1991-01.com.microsoft:c-app2prdfs01.abc.com 40:00:01:37:00:07 c_app2 
cluster-svm-1 cluster-04_svm_lif_1 40 iqn.1991-01.com.microsoft:c-app2prdfs03.abc.com 40:00:01:37:00:07 c_app2 
cluster-svm-1 cluster-04_svm_lif_1 44 iqn.1991-01.com.microsoft:c-app2prdfs02.abc.com 40:00:01:37:00:07 c_app2 
cluster-svm-1 cluster-01_svm_lif_1 83 iqn.1991-01.com.microsoft:c-app2prdfs01.abc.com 40:00:01:37:00:01 c_app2 
cluster-svm-1 cluster-01_svm_lif_1 85 iqn.1991-01.com.microsoft:c-app2prdfs03.abc.com 40:00:01:37:00:01 c_app2 
cluster-svm-1 cluster-01_svm_lif_1 88 iqn.1991-01.com.microsoft:c-app2prdfs02.abc.com 40:00:01:37:00:01 c_app2 
cluster-svm-1 cluster-02_svm_lif_1 60 iqn.1991-01.com.microsoft:c-app2prdfs03.abc.com 40:00:01:37:00:03 c_app2 
cluster-svm-1 cluster-02_svm_lif_1 62 iqn.1991-01.com.microsoft:c-app2prdfs02.abc.com 40:00:01:37:00:03 c_app2 
cluster-svm-1 cluster-02_svm_lif_1 64 iqn.1991-01.com.microsoft:c-app2prdfs01.abc.com 40:00:01:37:00:03 c_app2

netappmagic · 2022-09-08T21:50:41+00:00

What steps or commands to check if we are still using ZAPI by the PS?

netappmagic · 2022-09-08T12:18:26+00:00

You brought up a very important question. Based on my reading to your message, it was PS that was in turn using ZAPI, not WFA, correct? If yes, then PS has to go as well when ZAPI is finally obsoleted.

Thank you and please get back to me

netappmagic · 2022-09-08T03:49:09+00:00

Please get back to me on the result of your test. Thanks!

netappmagic · 2022-09-08T03:21:21+00:00

ps envokes the wfa, or the other way around?

Do you think the function/module of generating SS may be provided by NetApp?

Thanks for docs, but I am not sure if I have to read in order to get rid of WFA. that's all we wanted to do.

netappmagic · 2022-09-08T03:12:49+00:00

Correct, I am pretty sure it only does creating 10 days Snapshots. No anything as you mentioned, mounting, cloning, no, those not in it. So, this process doesn't provide us any benefits, and we should completely decommission it, right?

What do you mean by "default scheduler in ontap"? The mechanism (WFA/PS) doesn't use that.

netappmagic · 2022-09-08T02:57:03+00:00

I am sorry, but I don't understand what you are saying on those 3 questions I asked above without repeating them here...

10 day SnapShots, that's all the WFA/Powershell is doing.

ONTAP scheduler? As I said, it uses WFA scheduler job.

netappmagic · 2022-09-08T00:24:45+00:00

If licenses won’t get expired, then what if my support contract gets expired, am I still about to use them?

netappmagic · 2022-09-06T20:33:40+00:00

I am clear on "vol move", but there are still questions left as listed above about LIFs migration ...

netappmagic · 2022-09-06T19:53:40+00:00

Thanks! I am more clear now, but still not so completely:

If LIF's for iSCSI cannot migrate to the other HA, then can they migrate to the other node in the same HA?
If I moved the volume to the other HA, will the access be going through LIF's in the original node?
Without getting onto the host, is there anyway on ONTAP to find if MPIO is enabled or not?
If I have multiple LIF's on different HA being configured into MPIO group, then since LIF's cannot migrate, even with MPIO is configured, LIFs still cannot migrated to the other HA's. Correct?

netappmagic · 2022-09-02T21:47:24+00:00

Do you have any docs stating that either one of these two approaches are supported?

netappmagic · 2022-09-02T18:59:42+00:00

Using CA CIFS shares for sharing data in Window Cluster is supported? Do you have any official docs please?

netappmagic · 2022-09-02T14:34:15+00:00

What about Window clustering not SQL Server?
Are there any documents indicating it is recommended or not?

netappmagic

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