Use binary mode when transmitting the files via FTP to the IBM Z system, and use the SITE or LOCSITE command to force ftp to create the target datasets with attributes DCB=(DSORG=PS,RECFM=FB,LRECL=80,BLKSIZE=3120) and a primary allocation of 45 DASD tracks. Consult your mainframe systems programmer for the appropriate dataset high-level qualifier (hlq) name for the files as they are transferred to the IBM Z:
C:> ftp s390name
User: username
Password: ****
ftp> bin
ftp> quote site blksize=3120
ftp> quote site lrecl=80
ftp> quote site recfm=fb
ftp> quote site primary=45
ftp> put ISDE4Z.Vxxx.LOAD.SEQ hlq.ISDE4Z.Vxxx.LOAD.SEQ
ftp> put ISDE4Z.Vxxx.SAMP.SEQ hlq.ISDE4Z.Vxxx.SAMP.SEQ
ftp> put ISDE4Z.Vxxx.CLIST.SEQ hlq.ISDE4Z.Vxxx.CLIST.SEQ
ftp> quit
If you receive a B37 or D37 "out of space" error from any of the put commands, you may need to pre-allocate the sequential file on the mainframe using the sizes given in Table above.