how access time and storage capacity for magnetic disks are calculated. the storage capacity for a magnetic tape calculated

Let, A 2.5 inch diameter disk has 8 platters with each platter having two data recording surfaces, each platter on disk has 4084 tracks, each track has 200 sectors and 1 sector can store 1 MB of data. Also consider disk has a seek time of 2 milliseconds and rotates at the speed of 6000 rpm.