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What would be CVM oplog size if we have 2 SSD(each 1 TB) per node ? By default, Oplog size is 25% of the size of SSD and it can go maximum up to 400GB by setting it manually but that is based upon requirement and with the consultation of Nutanix Support. What is the vDisk, VM configuration and snapshot file’s extension of a Virtual Machine running on AHV cluster ? ( like in case of vmware it is .vmdk, .xml, -delta) A vDisk is any file over 512KB on Distributed Fise System including .vmdks and VM hard disks. vDisks are logically composed of vBlocks which make up the 'block map.' Please refer Nutanix Bible for more details...
When one cvm goes down(in a 10 node cluster with RF3) for 20 mints, then Guest VM’s new write and read IO would be served by anther's CVM and all these will be traveling across 10 g network. All the new I/Os will be redirected to another CVM when the local CVM is down. It doesn't wait for 20 minutes for the I/Os to be redirected. The hypervisor will inject route to a remote CVM as soon as it identifies the local CVM or stargate is down on that node. Will those new IOs served from local copy via another CVM or IOs will be served from the replica copy. IOs will be served from the replica copy. Considering the fact local CVM (or stargate on the CVM) is down Will cluster starts to build a new replica to accommodate the missing copy or RF3 Yes, Cluster will start rebuilding the data as soons as the Stargate is donw to accomodate the missing copy ot RF34. When new Write IO request comes, first it will write the data on Oplog then synchronously send to other CVM's Oplog.
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