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3.7.10 Hitachi RapidXchange (HRX)
Hitachi RapidXchange (HRX) enables the user to transfer data between S/390
system platforms using the ExSA™ channels or fibre channels. HRX enables high-speed data
transfer without requiring network communication links or tape. Data transfer is performed
via the HRX volumes, which are shared devices that appear to the S/390
3380-K LVIs and to the open-system host as OPEN-3 or OPEN-K LUs. To provide the greatest
platform flexibility for data transfer, the HRX volumes are accessed from the open-system
host using SCSI raw device mode.
HRX allows the open-system host to read from and write to S/390
the HRX volumes. The HRX volumes must be formatted as 3390-3A/B/C or 3380-KA/B/C LVIs.
The -A LVIs can be used for open-to-mainframe and/or mainframe-to-open HRX, the -B LVIs
are used for mainframe-to-open HRX, and the -C LVIs are used for open-to-mainframe HRX.
HRX also supports OPEN-x-HRX devices to provide open-to-open HRX operations for all-open
9900 subsystems.
The HRX software enables the open-system host to read from and write to individual S/390
datasets. The HRX software is installed on the open-system host and includes the File
Conversion Utility (FCU) and the File Access Library (FAL). FCU allows the user to set up and
perform file conversion operations between S/390
files. The FAL is a library of C-language functions that allows open-system programmers to
read from and write to S/390
Note: For further information on HRX, please see the Hitachi Lightning 9900™ RapidXchange
(HRX) User's Guide (MK-91RD052), or contact your Hitachi Data Systems account team.
3.7.11 Hitachi Multiplatform Backup/Restore (HMBR)
HMBR allows the user to implement mainframe-based backup procedures and standards for
the open-system data stored on the multiplatform 9900 subsystem. HMBR enables standard
mainframe backup/restore utilities such as DFDSS, Fast Dump/Restore (FDR), and VSE
FASTWRITE to perform volume-level backup and restore operations on OPEN-3 and OPEN-9
LUs. Using these mainframe-based utilities as well as mainframe-based media and high-
speed backup devices, the user can use the same procedures and achieve the same
standards for both mainframe and open-system backup/restore operations. Before HMBR
operations can begin, an offline utility such as ICKDSF must be used to create a volume table
of contents (VTOC) to enable the mainframe host to use the OPEN-x LUs as mainframe
volumes, which contain a single file. HMBR supports only full-volume backup/restore
operations.
Note: For further information on HMBR, please see the Hitachi Lightning 9900™ Hitachi
Multiplatform Backup/Restore User's Guide (MK-90RD037), or contact your Hitachi Data
Systems account team.
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sequential datasets and open-system flat
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sequential datasets on the HRX volumes.
Hitachi Lightning 9900™ User and Reference Guide
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and open-
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host as 3390-3 or
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sequential datasets using
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