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No.
Yes they will
BD-RE
Yes in fact most do. While there is new SSD(solid state drive) technology, standard hard drives still have disks. An SSD is extremely fast and efficient but more expensive.
It is a standard CD driver, for use with DOS and other low level boot disks, Google it for more information.
No. A standard DVD disk does not have the capacity to record a movie in BluRay format.
A standard 3.5-inch floppy disk has a capacity of 1.44 megabytes. To convert 1 terabyte (1,000,000 megabytes) to floppy disks, you would divide 1,000,000 by 1.44, which equals approximately 694,444 floppy disks. Therefore, it would take around 694,444 3.5 floppy disks to equal 1 terabyte of data.
The best format is Blu-Ray DVD disks, but the most common disk is a standard DVD disk.
They are different sizes, but 3.5" and 5.25" were fairly standard. They even had huge 8 inch drives on some machines.
they are floppy disks
That would depend on what you mean by "standard." All drives made in last 20 years or so have supported HD (1.44 MB) disks.
The traditional industry standard is basic storage.