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The Question is:
I have been trying to install a SONY-F561 MO drive onto an ALPHA ES40 server
using KOMNETWORKS third party software. However,
I am intrigued to find that I can load up the drive using standard vms
procedures and be able to initialise/mount/copy the disks without any
problems. However I can only do this if I use a rewriteable disk that has 512
bps only. What I would like to know
is, why can I only use 512 and not 1024/4096 bps?
Regards
Andy Wright
The Answer is :
By BPS, the OpenVMS Wizard will assume the reference is Bytes Per Sector.
(And not Bits Per Second, another commonly-used abbreviation.)
OpenVMS VAX, OpenVMS Alpha, and OpenVMS I64 all use and all assume a 512
byte block for disk storage, and contains support for reading and writing
devices that provide this block size. (OpenVMS typically uses the terms
disk block and disk cluster for the addressable and allocatable units of
disk storage, respectively.)
OpenVMS has no particular support for this device and this device may or
may not function (reliably or otherwise) at any particular setting, and
you will want to contact the device vendor for assistance. For general
third-party device integration and related information, please see the
OpenVMS Frequently Asked Questions. Specifically also see the section
on OpenVMS and CD block-size support, as that discussion is very likely
related here.
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