Edward Jaffe wrote:
We code TAPEBLKSZLIM=2G in DEVSUPxx.
I'm not sure if the system uses 128K or 256K blocks for our 3590s when
LBI is used...
Alex tells me [off-list] that the DCE contains two fields: recommended
and maximum block size at offsets x'5C' and x'60' into the DCE. You can
display this control block using the "DS QT,xxxx,UCB,DCE" command.
Here's what's shown for one of our 3590-H11s. Both recommended and max
block size values are x'40000' = 256KB:
IEE459I 13.17.46 DEVSERV QTAPE 604
UNIT DTYPE DSTATUS CUTYPE DEVTYPE CU-SERIAL DEV-SERIAL ACL LIBID
1500 3590 ON-RDY 3590A60 3590H11* 0113-45451 0113-45451 I-A
UCB AT V0220DB20
0008FF8015000000 0000000000E4C3C2 780480830020DAF9 0000000000000000
0000000000000000 0000E00C00000000 000083460000000E 0000000000000000
UCB PREFIX AT V022379F0
000D804000000000 00000000000100A0 289801B9C00080C0 132F000000000000
0108000000000001
UCB COMMON EXTENSION AT V0220DAF8
2300FB00200E0028 022379F000000000 0000000000FD811C 0220DA8000001800
DCE AT V0220DA80
E4C3C2E300788000 000000A400000000 0000000000000000 00000B0000000000
0000000000000000 0000000000000000 0000B18B00000000 0000000000000000
0000000000000000 0000000000000000 000000000000FF66 0000000000040000
000400000000000E 0000000000000000 0000000080000000 2300FB00200E0028
022379F000000000 0000000000FD811C 0220DA8000001800 00000000034EFE80
0008FF8015000000 0000000000E4C3C2 780480830020DAF9 0000000000000000
0000000000000000 0000E00C00000000 000083460000000E 0000000000000000
E4C3C2E3
**** 1 DEVICE(S) MET THE SELECTION CRITERIA
**** 1 DEVICE(S) WITH DEVICE EMULATION ACTIVE
HTH ...
--
Edward E Jaffe
Phoenix Software International, Inc
5200 W Century Blvd, Suite 800
Los Angeles, CA 90045
310-338-0400 x318
[email protected]
http://www.phoenixsoftware.com/
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