Often, MPHA faults can be easily attributed to a single SAS cable or SAS HBA fault, when an entire shelf or loop appears offline. What happens when a disk shows up as single path (when the disks surroundind it are multi-path)? Fault Summary In this scenario, we have a fabric…
Simple script (needs to run on a Linux host so awk can be used) to show all disks and versions of firmware. awk is used tostrip the disk name then to remove duplicate lines linuxhost# ssh -l admin cluster01 disk show -fields model,firmware-revision | awk '{print $2,$3}'…
Clustered ONTAP does away with the traditional configuration files, such as for snapmirror, rc (initialisation) and in this case quotas. In 7-mode, the biggest challenge with quotas (when configured in a secure multi tenant environment) was configuring them for vfilers as this could only be done with a CLI copy/…
Moving into NAS presented containers for datastores comes with some operational complexities, one of the most painful is in managing multiple hosts. When using the vSphere GUI, it is very slow and inefficient to mount multiple datastores across multiple hosts. If adding 6 datastores for 4 hosts, this would take…
We recently discovered a MPHA fault which has existed for some time on a controller, where it could only see a single path to its disks. After digging under the covers, it seems there's a gap in both ONTAP's and NetApp's ability to determine…