Procedure 10.17: CONVERT MHD OPTIONAL DISK PAIR TO 2GB - 5E14 AND LATER
OVERVIEW
This procedure reconfigures small computer system interface (SCSI) moving head disks (MHD) to a 2 gigabyte
(2GB) storage capacity, specifically for optional pair MHDs.
The following four conditions must be satisfied before proceeding with this procedure.
Switch must be running on the 5E14 software release.
The primary MHD pair 0 and 1 must have already been converted to 2GB Volume Table of Contents (VTOC).
Any software backup disks (MHDs 14 and/or 15) must have already had the ECD modified to accept a 2GB
VTOC.
The optional disk pair that is now installed, and is to be converted, must have physical memory capacity of at
least 2GB in size (Table 10.17-1 ).
To verify correct circuit pack configuration, type and enter
OP:MHD=x,info;
where x= MHD number for even
and odd optional disk pair.
Table 10.17-1 MHD Memory Capacity
Circuit Pack No.
KS, List No.
Physical Memory Capacity
UN375D
KS23908L30
2GB
UN375E
KS23908L41
4GB
UN375F
KS23908L50
9GB
If all of the above conditions are not met then this procedure can not be performed. Refer to 5E14 Retrofit Manual
235-106-104 for satisfying any of the above conditions.
The following activities will be accomplished in this procedure.
Verify correct Disk File Controller (DFC) configuration.
Reconfigure ECD for even-side MHD for 2GB VTOC.
Update incore for changes made for even-side MHD.
Reconfigure ECD for odd-side MHD for 2GB VTOC.
Update incore for changes made for odd-side MHD.
CAUTION:
This procedure should be performed during off-peak hours and in its entirety. It is necessary to simplex
the optional disk pair when modifying the ECD of each. The chances of a service-impacting outage,
though small, are increased whenever disk pairs are simplexed. Performing this procedure in its entirety
and with minimal interruptions lessens the time during which the optional disks are operating in simplex
mode while each mate is out-of-service (OOS) and having its ECD updated.
Doubling the size of a disk's VTOC from 1GB to 2GB effectively doubles the restoration time of the drive. Optional
drive pairs that are physically 2GB or greater may be reconfigured to have 2GB VTOCs. This doubles the previous
storage capacity, but also doubles the restore time for each disk in a targeted pair.
235-105-210
October 1999
Copyright © 1999
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Страница 516: ...Figure 10 24 1 KS 23483 L13 Disk Drive Cable Connection Rear View 235 105 210 October 1999 Copyright 1999 Page 2 ...
Страница 517: ...Figure 10 24 2 KS 23483 L21 Disk Drive Cable Connection Rear View 235 105 210 October 1999 Copyright 1999 Page 3 ...
Страница 518: ...Figure 10 24 3 KS 23841 L15 Disk Drive Cable Connection Rear View 235 105 210 October 1999 Copyright 1999 Page 4 ...
Страница 523: ...Figure 10 24 6 Top View of DUP Showing Internal Cabling 235 105 210 October 1999 Copyright 1999 Page 9 ...
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Страница 1008: ...Figure 11 55 1 CTSNS DIP Switch Settings 235 105 210 October 1999 Copyright 1999 Page 2 ...
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Страница 1284: ...Figure 15 15 1 PARADYNE Paradyne Corporation 3810 Modem Diagnostic Control Panel 235 105 210 October 1999 Copyright 1999 Page 6 ...
Страница 1287: ...Figure 15 16 1 153A Adapter Connection Figure 15 16 2 AMATPS Block Diagram 235 105 210 October 1999 Copyright 1999 Page 3 ...
Страница 1289: ...Figure 15 17 2 AMATPS Data Link 235 105 210 October 1999 Copyright 1999 Page 2 ...
Страница 1290: ...Figure 15 17 3 Single Housing B25A Cable Assembly 235 105 210 October 1999 Copyright 1999 Page 3 ...
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Страница 1324: ...11 Type and enter q 12 STOP YOU HAVE COMPLETED THIS PROCEDURE 235 105 210 October 1999 Copyright 1999 Page 2 ...
Страница 1342: ...Figure 15 40 1 SCANS II Dial Up Data Set Installation Diagram 235 105 210 October 1999 Copyright 1999 Page 2 ...
Страница 1344: ...Figure 15 40 4 59A1 Mounting Front in Slot J3 Figure 15 40 5 2048A Data Set Front 235 105 210 October 1999 Copyright 1999 Page 4 ...
Страница 1345: ...Figure 15 40 6 Berg Connector Terminations and Layout 235 105 210 October 1999 Copyright 1999 Page 5 ...
Страница 1346: ...Figure 15 40 7 B25A Cable 4 STOP YOU HAVE COMPLETED THIS PROCEDURE 235 105 210 October 1999 Copyright 1999 Page 6 ...
Страница 1360: ...Figure 15 47 2 Typical SCANS III Link Diagram 235 105 210 October 1999 Copyright 1999 Page 2 ...
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Страница 1376: ...Figure 15 55 6 201C to TN83 Data Set Cable Drawing 235 105 210 October 1999 Copyright 1999 Page 6 ...
Страница 1418: ...Figure 15 56 1 PARADYNE 3810 Modem Diagnostic Control Panel 235 105 210 October 1999 Copyright 1999 Page 4 ...
Страница 1421: ...Table 1 1 O M Checklist 235 105 210 October 1999 Copyright 1999 Page 3 ...