[Info-vax] RZ1DB etc

[Phillip Helbig---undress to reply]

The RZ23 was about 120 MB, the RZ26 about 1 GB (I don't remember seeing
RZ 24 or RZ25, presumably 250 and 500 MB?), the RZ28 2 GB (why the jump
and no RZ27?) and the RZ29 4 GB.  The RZ1C% is also 4 GB and the RZ1D%,
e.g. the RZ1DB, is 9 GB.  (Presumably the A as the fourth character is 1
GB and B is 2 GB, though I have never seen RZ1A% or RZ1B% disks.)  The
RZ1E% is 18 GB. 

These are all labels I've seen on SBB disks, the thick ones.

What does the fifth character stand for, e.g. the B in RZ1DB?

I have an RZ1FB at 36 GB.  Were there larger-capacity disks in this size 
(thick SBB for a BA356)?

Are all the RZ1* disks ultra wide (e.g. 40 MB/s)?