Podpora UNMAP funkcionality ve vSphere 6.0 urcite je: viz clanek od Cormaca Hogana: http://cormachogan.com/2015/05/07/vsphere-6-0-storage-features-part-8-vaai-unmap-changes/
Pozadavky:
- VMDK must be thin provisioned
- Virtual Machine Hardware version must be 11 (ESXi 6.0)
- The advanced setting EnableBlockDelete must be set to 1 – toto je v zakladu vypnuto!
- The Guest OS must be able to identify the disk as thin (Windows 2012 [updated 30-Oct-2015] uses the B2 mode page to achieve this)
- Manualne se da unmap spustit viz. KB https://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=2057513
- Relevantni mi prijde pozadavek na korektni alignment filesystemu vuci lunu. Viz kb: https://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=2048466
Pro viditelnost prodavam i Davida Paska, posledni dobou toto tema hodne diskutujeme. Jinak i ohledne te funkcionality pro vSphere 6.5 je to zavisle na tom, jestli storage unmap korektne umi - http://cormachogan.com/2016/12/05/determining-array-supports-automated-unmap-vsphere-6-5/, mela by pro to byt spravne oznacena na VMware HCL.
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