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| New 3Par User - Thin Provisioning and VMWare Question please https://www.3parug.com/viewtopic.php?f=18&t=2711 |
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| Author: | coiter [ Fri Mar 02, 2018 4:14 am ] |
| Post subject: | Re: New 3Par User - Thin Provisioning and VMWare Question pl |
Apologies for hijacking the thread, but im trying to understand why our new 3par system is not reclaiming space. We just had last week our new 3par 8200 system installed by contractor. i have moved a 1TB virtual vm to the new 3par storage. (Normal fileserver with 400gb free space) We currently use ESX 6.5. This new 3par LUN has thin,dedup and compression enabled, yet it still take 1TB storage space on the new 3PAR. based on the inital statements in this thread, it should only take 600gb or less of storage space. Why is this still so, have the contractor forgotten something? |
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| Author: | MammaGutt [ Fri Mar 02, 2018 11:20 am ] |
| Post subject: | Re: New 3Par User - Thin Provisioning and VMWare Question pl |
Yes, no, maybe. It depends on where you look. If you are looking at the system total, that always shows raw space (pre-RAID). If this is the only volume you have, it also might be showing spare space allocated to survive hardware failures. |
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| Author: | coiter [ Fri Mar 02, 2018 12:06 pm ] |
| Post subject: | Re: New 3Par User - Thin Provisioning and VMWare Question pl |
im looking at the volume itself, and the files inside the volume, the vmdk file itself, and everywhere it shows more then 600gb total size. there is only this vm on this specific volume.. |
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| Author: | MammaGutt [ Fri Mar 02, 2018 3:38 pm ] |
| Post subject: | Re: New 3Par User - Thin Provisioning and VMWare Question pl |
Could you post some pictures so we can understand? I'm thinking 3PAR GUI, Vmware GUI and also possibly screenshot from the virtual server. Also output from 3PAR CLI (showvv -s and showcpg -d) would be very good as that would display how much data is written to the volume and how much is stored. Maybe the most important question would be, is the datastore formatted as VMFS6? It isn't enough just to upgrade your host to ESXi 6.5 to get automated reclaim you need a fresh VMFS6 datastore as well. And of course "thin on thin" (thin on 3PAR and thin provision in Vmware). |
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