Re: [Bacula-users] appropriate data spool size for tape
Dave I'm getting my Quantum Dlt 4000 going with bacula. I've Dave included my definitions below and the job that i'm running. I'm Dave not getting very good performance with the spool, the drive Dave starts and stops quite frequently, it is on an Adaptec Ultrawide Dave 2940 scsi controller. I was wondering the optimal size of a tape Dave data spool? I've got a single DLT7000 at home and I was running with a spool of around 7gb and it made alot of difference. Being able to push the incrementals totally to disk, then spool them off a tape speed increased my capacity on the tapes, and I also don't hear nearly as much shoe-shining when backups are running. For the DLT4000, which only holds 20gb native, I'd say 5gb would be fine. Of course if you have more space, then that's good too. John - This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ ___ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
Re: [Bacula-users] appropriate data spool size for tape
Dave schrieb: I'm getting my Quantum Dlt 4000 going with bacula. I've included my definitions below and the job that i'm running. I'm not getting very good performance with the spool, the drive starts and stops quite frequently, it is on an Adaptec Ultrawide 2940 scsi controller. I was wondering the optimal size of a tape data spool? Thanks. [snip] Maximum Spool Size = 1024 Maximum Job Spool Size = 1024 http://www.bacula.org/dev-manual/Data_Spooling.html Maximum Spool Size = size Where size is a the maximum spool size for all jobs specified in bytes. Maximum Job Spool Size = size Where size is the maximum spool file size for a single job specified in bytes. 1024 = 1KB, this is not much for a spool file. Ralf - This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ ___ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
Re: [Bacula-users] appropriate data spool size for tape
Dave schrieb: [pleas always answer to the list] Thanks for your reply. My brain is fuzzy, do you use data spooling and if so what size value do you have? Do you also use the same tape drive as i? If so, does my hardware definition look correct? I've a LTO-3 drive and have no special hardware config in my bacula-sd.conf. For spooling I use an extra RAID 0 device with ~440 GB free disk space. I don't run concurrent jobs, so I can use the whole device for a job. Maximum Spool Size = 420g Maximum Job Spool Size = 420g Spool Directory = /bacula-spool/ Ralf - This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ ___ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
[Bacula-users] appropriate data spool size for tape
Hello,
I'm getting my Quantum Dlt 4000 going with bacula. I've included my
definitions below and the job that i'm running. I'm not getting very good
performance with the spool, the drive starts and stops quite frequently, it
is on an Adaptec Ultrawide 2940 scsi controller. I was wondering the optimal
size of a tape data spool?
Thanks.
Dave.
# Definition of Quantum DLT4000 Tape Drive
Device {
Name = Quantum DLT4000
Description = Quantum DLT4000 Tape Drive for FreeBSD
Media Type = DLT
Archive Device = /dev/sa0
LabelMedia = yes; # lets Bacula label unlabeled Media
Random Access = Yes;
AutomaticMount = yes; # when device opened, read it
RemovableMedia = no;
AlwaysOpen = no;
Offline On Unmount = no
Hardware End of Medium = no
BSF at EOM = yes
Backward Space Record = yes
Fast Forward Space File = no
TWO EOF = yes
# for data spooling
Maximum Spool Size = 1024
Maximum Job Spool Size = 1024
Spool Directory = /backup/bacula-spool
}
Job {
Name = isos-Tape
Type = Backup
Client = zeus-fd
FileSet = Iso Files
Storage = Quantum DLT4000
Messages = Standard
Pool = Default
Write Bootstrap = /var/db/bacula/tap.bsr
Priority = 10
SpoolData = yes
}
Storage {
Name = Quantum DLT4000
Address = bacula.example.com # N.B. Use a fully qualified name
here
SDPort = 9103
Password = # password for Storage daemon
Device = Quantum DLT4000 # must be same as in the storage daemon
Media Type = DLT # must be same as MediaType in
Storage daemon
}
Pool {
Name = Default
Pool Type = Backup
Recycle = yes # Bacula can automatically recycle
Volumes
Recycle Oldest Volume = yes
Maximum Volume Jobs = 1
LabelFormat = TAPE-
Volume Retention = 1 year
Storage = Quantum DLT4000
}
-
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