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тАО09-07-2005 05:29 PM
тАО09-07-2005 05:29 PM
so, i can run an individual backup job by $stor startup system_backup SYSBAK.COM
but, if i want to run a scheduled automatical job for backup. how can i do ? how does the system know when the backup should be started ?(the start_time parameter is in SYSBAK file,how does system get this time and run the job on time ?)
Solved! Go to Solution.
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тАО09-07-2005 07:40 PM
тАО09-07-2005 07:40 PM
Re: How to understand the SLS backup running process
!
!but, if i want to run a scheduled automatical !job for backup. how can i do ? how does the !system know when the backup should be started !?(the start_time parameter is in SYSBAK !file,how does system get this time and run the !job on time ?)
You could simply create a command file with the STORAGE STARTUP command, and SUBMIT the "wrapper" command file.
I haven't played with SLS in a few years, but IIRC, you can create .BAK files that contain time of day and day of week "symbol" assignments, as well. There is, I recall, a detached job run by SLS once per night, that looks for these .BAK files, and "schedules" them to run.
Folks who currently use SLS can fill in any details I have left out - I haven't used it since 2002.
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тАО09-07-2005 08:26 PM
тАО09-07-2005 08:26 PM
Re: How to understand the SLS backup running process
$ STORAGE START SYSTEM_BACKUP XXXX
Purely Personal Opinion
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тАО09-07-2005 08:29 PM
тАО09-07-2005 08:29 PM
Re: How to understand the SLS backup running process
Purely Personal Opinion
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тАО09-07-2005 08:39 PM
тАО09-07-2005 08:39 PM
Re: How to understand the SLS backup running process
!At midnight or when you restart SLS then SLS will at SLS$SYSBAK:XXXX_SBK.COM files and schedule batch jobs in the SLS batch queue according to the parameters in the file.
you mean that the parameter(TIME_1) will actually control the backup starting time and submit it into batch queue, right ?
BTW, if my BAK.COM file is not in SLS$SYSBAK directory. how can i submit a individual job? $stor startup system_backup [directory]***.bak.com ?
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тАО09-07-2005 11:12 PM
тАО09-07-2005 11:12 PM
Re: How to understand the SLS backup running process
See HELP STORAGE START SYSTEM_BACKUP
The TIME_1,DAYS_1, parameters control when the batch job will be queued for.
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тАО09-08-2005 12:52 PM
тАО09-08-2005 12:52 PM
Re: How to understand the SLS backup running process
and i have other parameters can not be understood...
1.could you explain this one by one for me?
qualifiers :== /record/since=backup/igno=(interlock,nobackup)/media_format=compaction/bloack_size=65024/fast
2.DENSITY :== 0
(1)this means no compaction, right? but why it's ")/media_format=compaction" in the Question-1?
(2)the default value is 6250(from SYSBAK.TEMPLATE),what's the unit of 6250?
3.REEL_SIZE == 2400
what's the reel size ?
4.QUICHLOAD_RETRIES == 80
it's 80 seconds or 80 trials ?
(if it's 80 sec)it will try to mount the disk which is in the drive? if it cannot mount it on or the disk is not free, after the 80 sec, what will it do ? try to load the next tape in and mount? (if it's right, after trying all tapes in the slot
5.SAVESET_GEN == "F$EXTRA(0,15,DO_DISK)+"".BAK"""
there are many """" here, i cannot seperate them, could you tell me the function of quote marks one by one?
many questions,... hehe~ sorry for that, i'm a green hand :P
thanks indeed in advance !
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тАО09-08-2005 02:08 PM
тАО09-08-2005 02:08 PM
Re: How to understand the SLS backup running process
qualifiers :== /record/since=backup/igno=(interlock,nobackup)/media_format=compaction/blo
ack_size=65024/fast
These are all qualifiers for BACKUP - record, fast, and since=backup all indicate an incremental backup. igno=interlock is standard, ignore=nobackup is not - has the potential for making backups a lot longer than they need to be. block_size=65024 is close to the maximum blocking factor for files to be put on tape. The various qualifiers for the BACKUP command are important to learn - I suggest study of the relevant section(s) of the System Manager's Manual to gain a better understanding of BACKUP. SLS will be easier to understand with this background.
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тАО09-08-2005 02:12 PM
тАО09-08-2005 02:12 PM
Re: How to understand the SLS backup running process
(1)this means no compaction, right? but why it's ")/media_format=compaction" in the Question-1?
(2)the default value is 6250(from SYSBAK.TEMPLATE),what's the unit of 6250?
3.REEL_SIZE == 2400
what's the reel size ?
Also, study of the SLS manuals will be helpful here, as well. The 6250 value refers to bpi - a measurement important in the day of reel-to-reel tape drives. 2400 refers to the number of feet on the tape reel. I'm not sure if these parameters are important today, but a check of the SLS manual(s) may help.
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тАО09-08-2005 03:13 PM
тАО09-08-2005 03:13 PM
Re: How to understand the SLS backup running process
but i cannot find "SLS" in system manual, is there any special document for SLS?