This step is only required when the data volume mount point needs to be matched with a block storage device on FlashArray.
An SSH connection needs to be created to query the operating system for the device serial number for the SAP HANA data persistence volume, once the command line is available for reading and writing we run the “df -h” command to view all mounted volumes and mount points as well as retrieving the device mapper or storage device (sd) the mount point is mapped to. The output of df -h then needs to be piped and “grep” used to isolate the specific entry for the required volume. It is possible to query the /etc/fstab for the same information but the contents of fstab may not always be what the system is working on at that point in time.
df -h | grep <SAP HANA Data Persistence mount point>
udevadm info --query=all --name<device name> | grep DM_SERIAL
Using the serial number returned for the device, it is possible to match it up to the block storage volume on a FlashArray. Note that the block volume serial number will be all of the characters after “3624a9370”
To see all of the volumes and their serial numbers using the FlashArray CLI execute the following :
purevol list