I have a IBM DB2 database on LUW that is around 5TB. Currently the backup of 5TB takes around 24 hours.
I am thinking of creating a mountpoint called /dbbackup and that mount point is a LVM powered by 4 SSD Disks and the write speed of SSD is 500Mbps would it be fair to assume that my DB will be backed up in 1 Hour ?
i.e 5242880 / (500 * 4) ?
Is my back of the envelope calculations correct ? Should I instead use say HDD's with 200Mbps write bandwidth ?