Northern Telecom DMS-100 Series Maintenance Manual page 105

Procedure 4-35
Disk condition and disk file error messages - procedures
Notes:
Note 1: If EOT is sent to the DMS-100, the DPP DSIs are dismounted. Arrange for alternate recording media immediately.
Then switch back to the DPP when this procedure is complete. Otherwise, the possibility of loss of AMA data is very high.
Contact technical assistance personnel and initiate a polling session. Once complete, perform the following steps:
I
Note 2: ndex files store all of the closed versions of file type. All versions in the new index file are marked for polling. If no
data file is open for write, all 255 possible versions are examined for inclusion in the index file. If 56 versions (72- and
140-Mbyte disks, 380 Mbyte w/o 56K polling; 200 versions for 380-Mbyte with 56K polling and 760-Mbyte) are found to exist
already, the process is terminated.
c.Fix the index.
Enter:
>IDXMAINT CREATE DIR FType Version (cr)
i. If any error messages appear, go to step e;
otherwise, go to step d.
d.Remove the AMA files/versions from disk which do
not appear in the Index file.
i. Coordinate this activity with the Collector tomake
sure the file/versions have been polled and it is
all right to delete.
ii. The sequence numbers of the files to delete are
lower than the newest one. However, if number
255 is on the list, look for a file number 00 or 01.
The count wraps around for file number 255 plus
1.
iii. If there are any doubts about this procedure,
contact NT immediately.
e.Call for technical assistance.
End
DPP Recovery and Routine Maintenance Guide BCS35 and up
Disk drive procedures 4-71
(continued)
(at the terminal)
where: FType = AMA = AMA files
= EXC = Exception files
Version = 1 - 255 = starting pro-
gram version of the
data file.
2