asteroza + scsi   23

How to run Nested ESXi on top of a VSAN datastore?
Trick to make nested vSAN work. Need to fake out a SCSI reservation that the lower vSAN can't support.
VMware  ESXi  nested  vSAN  SCSI  reservation  bypass  sysadmin  tips  tricks 
october 2018 by asteroza
vSphere 5.5 Storage Enhancements Part 4: UNMAP -
Uh, so command line only, so not much different from the old -y option for vmkfstools
VMware  ESXi  SCSI  UNMAP  Delicious 
october 2016 by asteroza
Guest Reclaim
Requires guest windows to use thin provisioned aware SCSI driver
VMware  guest  VM  SCSI  UNMAP  disk  space  reclaim  sysadmin  tools  utilities  tricks  SDelete  alternative  Delicious 
october 2016 by asteroza
Zero fill and/or SCSI UNMAP
ESXi HWv9 required for guest based SCSI unmap means nobody with free ESXI can do it that way, and still have to do it the old fashioned way.
VMware  ESXi  VM  storage  reclamation  SCSI  UNMAP  sysadmin  tips  tricks  Delicious 
july 2014 by asteroza
VMware KB: After repeated SAN path failovers, operations that involve VMFS changes might fail for all hosts accessing a particular LUN
iSCSI issue. Too many VM files being simultaneously accessed on the same LUN will cause a lockup due to SCSI reservation errors. Workarounds are to reset the LUN interface, better distribute VM backing file load, reduce the number of VM's per LUN, or switch to NFS which does file level locking rather than bus level.
VMware  ESXi  ESX  iSCSI  SCSI  reservation  error  datastore  VMFS  failure  Delicious 
february 2010 by asteroza

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