Yes it does. From the HCD manual, there's a section that talks about them
<quote>
Defining a special FBA device (FBA)
You can use a new type of disk devices, known as Fixed Block Architecture (FBA)
or Fixed Block (FB) devices. Devices of this type may be considered as a data
bridge between z/OS systems and Linux, UNIX®, and Windows® operating systems.
Hardware support comes in the form of an optional licensed z/OS Distributed
Data Backup (zDDB) multi-platform access feature on DS8700 and disk controllers
of subsequent model types. External software support comes in the form of the
IOSFBA service (and the macro with the same name), introduced by APAR OA41040.
Both HCD and HCM allow to define FBA control units and FBA devices. To do this,
you need to:
Define a new logical control unit of type 2107-FBA, attached to a z
processor by no more than eight FICON channel paths.
Define from 1 to 256 I/O devices of type FBA in subchannel set 0.
Connect FBA devices to an operating system (OS) configuration.
Before allocation, FBA devices must be varied online. You can consider
connecting them to an OS configuration with the OFFLINE NO attribute or using
the regular VARY ONLINE system command. Since the FBA device type belongs to
the Unit Record (UR) class of devices, an FBA device may be owned by only one
address space at any given time and on the same system. However, FBA devices
may be shared by systems in the GRS complex because the IOSFBA service uses
ENQs with the scope of SYSTEMS (global ENQs) to serialize allocation of FBA
devices. Sharing z/OS FBA devices between systems in different GRS complexes
may cause allocation issues. See z/OS MVS Programming: Authorized Assembler
Services Guide for more information on z/OS FBA services.
</quote>
On Tue, 11 May 2021 17:55:18 +0000, Seymour J Metz <[email protected]> wrote:
>Yes, but that does mean that z/OS has at least limited support for DASD that
>don't look like ECKD.
>
>
>--
>Shmuel (Seymour J.) Metz
>http://mason.gmu.edu/~smetz3
>
>________________________________________
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