To replace or install a hot-pluggable hard drive, follow these steps:"
Now in regards to the first replacement being unsuccessful, it might be the case that another disk was already having problems and the person who did the replacement did not realize about that taking place already.
With these servers is always recommended to run the latest firmware available (unless there is a known issue that you are avoiding) cause through the time, we have improved the way the C series are monitored, so if there is old firmware running on the server, that might be the reason for the guy that replace the disk not realizing about another disk failure, maybe not a major failure but enough for the array to think that was not tolerable for the parity data stored in the rest of the disks members.
Also, there might be another situation where if your hot spare configure for the RAID 5 was a "Global Hot Spare", another array in the same host might have been using that array already.
These are just assumptions of scenarios that can take place when your array loses info when it is not supposed to do so, but with no logs or support data corresponding to this failure we can just think about possible scenarios, not 100% facts... just guessings.
The unmanaged mode is also known as Network only switching, which is introduced in Brazos release. It adds the flexibility for customer to use only network automation for service appliance.
If a device is configured a...
Usually, we can access ESXi Shell by pressing Alt+F1 from ESXi DCUI (Direct Console User Interface).
But on HyperFlex system, it just shows black window.
This is expected behavior because HyperFlex redirects ESXi Shell output to SoL...
Configuring an Export Policy Using the GUI
This procedure explains how to configure an Export policy using the APIC GUI. Follow these steps to trigger a backup of your data:
On the menu bar, choose Admi...