VSAN-Troubleshooting-Reference-Manual

Diagnostics and Troubleshooting Reference Manual – Virtual SAN
Note that the VM Home Namespace does not implement the Stripe Width policy
setting, thus we only see a single component in the RAID-1 mirror/replica; RAID-1 is
used for implementing the Failures To Tolerate policy setting.
There is also a single component called a Witness to help the object to remain
accessible in the event of a failure. An object will remain accessible so long as:
1. There is a full replica/mirror copy without any failing components available
2. Greater than 50% of the components or votes within an object are available,
which includes the witness.
This is the VMDK object and its components as it appears in version 5.5 of the
vSphere web client.
The VMDK object shown here implements both the Failures to Tolerate and Stripe
Width settings. The RAID-1 has got two mirrors once again, but now each side of the
mirror is made up of a RAID-0 to represent the stripe. It should be noted that stripe
width is a minimum value; there may be more stripes than what was placed in the
VM Storage Policy.
If the VMDK storage object is too big to fit onto the free space on a single hard disk,
then Virtual SAN will automatically stripe it across multiple hard disks. Also note
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