So does that mean there can be no free space for a individual thin volume? Yes. vola - thick - 20GB -of which 40GB is used That's impossible. You cannot use more space than volume size. It is true for both thick and thin volumes. Your total data on a volume may exceed it though if you are using deduplication and/or compression. But that's different story. In this case, total size of all volumes is greater than aggregate size as thin volumes share aggregate space. How does the thin volume operate here?. First space for thick volumes is reserved. What remains is shared between all thin volumes. Yes, you can create thin volumes with size greater than containing aggregate size. You won't be able to fill them with more data than is available on aggregate though. So in your example two thin volumes have max 30G of free space (50G aggregate - 20G thick volume). If you put 30G in one volume, another one does not have any free space.
... View more
I am afraid, I do not quite understand what you mean. Thin volumes share space in aggregate; that's the main reason to create thin volume in the first place.
... View more
If space actually available in aggregate is less than volume “virtual” size, df shows actually available space in aggregate. At least, it did it every time I tried
... View more
a) vol options vol_orauivv_oradata1 nosnap on It does not mean there are no snapshots; it just stops Data ONTAP from creating scheduled snapshots. b) how to prevent this? You need to find out what is "this" first. c) should I turn on snap reserv? Makes no difference for LUN. You can also just create smaller LUN. d) Can it be because of low quontity of inodes? No. e) Can the deduplication make the impact? Yes. It seems to create snapshots internally. Whatever you do, filling volume to 99,99% is asking for troubles.
... View more
a) Snapshots b) Intensive overwrite where it does not have time to free overwritten blocks fast enough. c) Thin provisioned volumes so there is not enough space on aggregate
... View more
For thick volumes (with reservation “volume”) full size is reserved in aggregate when volume is created and not available for anything else. “Used” shows actually used space and the rest is space reserved for volumes. If you sum all space allocated for volumes, you get ~ 15TB.
... View more
SnapMirror in 8.1 supports flexclones; you should be able to SnapMirror base volume, create FlexClone on destination from the same base snapshot as on source and resync two flexclones. See online backup guide. SnapMirror does require a license though ...
... View more
1. Put disks in system with 8.x 2. Make them spares (delete any leftover aggregates) 3. Zero spares 4. Remove disk ownership After this you should be able to add them to any version.
... View more
If you have snapshots, you can restore LUN from it - of course, all data since snapshot had been taken will be lost. Otherwise I am not aware of any possibility to “undelete” files on NetApp.
... View more
SAN or NAS does not really matter. On disk state is always crash consistent up to the latest CP. So in case of NVRAM failure on a single filer you lose some amount of uncommitted data. It is true that in file server environment impact is probably less severe than in database environment.
... View more
You miss the point. Some other vendors will switch to write-through if partner fails. This eliminates risk of lost acknowledged writes due to remaining controller failure. Stress point here being “acknowledged”. I’m not aware that NetApp have ability to do it (may be undocumented option?). And yes, those vendors do mirror write cache across controller pair, of course, to eliminate SPOF. Some are using intent log on external SSD disks which are taken over by partner. I know at least one system which claims to redistribute cache mirroring across remaining nodes if more than two are present.
... View more
ifconfig vif1-2 `hostname`-vif1 192.168.102.1 netmask 255.255.255.0 mtusize 9000 mediatype auto -wins partner vif1-2 # FAS2240 doesn't have the -wins Either this is `hostname`-vif1 or 192.168.102.1; you cannot have both. switchport general allowed vlan add 2 tagged switchport general allowed vlan add 1 untagged You created two tagged VLANs on NetApp. Your switch configuration has to match it. If you want to add additional VLAN 2 to existing untagged port, just do it; no need to create VLAN 1 on NetApp.
... View more
Adding alias from another VLAN is not going to work for obvious reasons you need to add additional interface in new VLAN: vlan add vif0 205
... View more
In your original mail snapshot is dated Oct 09. Your original mail (post) was made Oct 14. That’s 5 days, not one hour. You need to check whether your snapmirror is running. Billshafer already told you that.
... View more
Your schedule is every hour, not every minute. And even in this case next scheduled SnapMirror transfer is skipped if previous one did not complete. Backup applications can delete large amount of expired data in short time.
... View more