2.
Determine Tape Backup Duration
For Lucent Created Files
Total execution time for this procedure depends on three sequential activities:
(1)
Synchronization of disk0 with disk1 is terminated.
(2)
Data from partitions 3 through 7 of disk1 are copied to the backup tape.
(3)
Disk0 and disk1 are resynchronized.
The most significant time component of the three is the second one: copying of data from disk to tape.
Tape transfer time depends on the size of disk drive data content. Nominal transfer rate is 1
MB(mega byte) (1.95K blocks)/second, or 60 MB (117K blocks)/minute. A full 18 GB (giga byte) disk
drive would require approximately 5 hours for complete transfer.
3.
Calculate Tape Back Up Time
For Lucent Created Files
To estimate an approximate time of tape back up, do the following:
(1)
CONNECT
(2)
Type and enter
df^-k^|^grep^dsk/d^|^tr^-s^"^"^|^cut^-d"^"^-f3
Where:
^ = space
Response:
The output consists of five lines of data (the five disk partitions). Each line is kilobytes
of data transferred. The sum of the five lines divided by 60,000 is the approximate
time of tape back up in minutes. The maximum time could be five hours.
(3)
DISCONNECT
4.
Tape backup can be performed for either Lucent created files or Customer created files.
NOTE:
The ASM will backup all disk files created and/or provided by Lucent for usage on the ASM. Backing
up any Customer created and/or modified disk files is the responsibility of the Customer.
For
Lucent Created Files
go to 6.38.2
For
Customer Created Files
go to 6.38.2 and then to 6.38.3
6.38.2 Backup Lucent Created Disk Files
1.
Insert a 4mm DDS-3 125m tape cartridge into the ASM tape drive.
NOTE:
Insure that
Write Enable
is selected on the tape: switch on rear of cassette is closed for
Write
Enable
.
2.
CONNECT
3.
To start tape backup, type and enter
dsbackup
235-105-210
October 1999
Copyright © 1999
Page 3
Summary of Contents for 5ESS-2000
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Page 1008: ...Figure 11 55 1 CTSNS DIP Switch Settings 235 105 210 October 1999 Copyright 1999 Page 2 ...
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Page 1289: ...Figure 15 17 2 AMATPS Data Link 235 105 210 October 1999 Copyright 1999 Page 2 ...
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Page 1360: ...Figure 15 47 2 Typical SCANS III Link Diagram 235 105 210 October 1999 Copyright 1999 Page 2 ...
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