I need to backup a Lotus Domino Server. We are using the NML on a Lotus Domino server with 2.6TB of data size. My problem is that the backup process is taking almost 26 hours!!! The data transfer ratio is 31 MB/s (Is this a good rate?) over 1Gb LAN.
Could you guys point me to where start to a look??
Some info about my configuration:
Server Legato Networker
Windows 2003 Server
Processor : Intel Xeon (4 cores)
Memory : 4 GB
NIC : 2Gb (1 Gb nic x 2 )
Legato Networker 7.5 SP1
Tape library with four Ultrium-4 drives
Windows 2008 Server
Processor : Intel Xeon (4 cores) 64 bits
Memory : 18 GB
NIC : 1Gb
Legato Networker Module for Lotus NLM (NMDA 18.104.22.168)
Thanks in advance for any clue!!!
I increased the paralellism in the client from 8 to 24 and the target sessions in the tape drives from 4 to 8 (we have a library with 4 LTO-4 drives). With this changes I managed to backup using 3 tapes at the same time and the speed increased to 100-110 MB/s. This speed is consistent with the max speed of a 1Gbps NIC (1Gbps = 120MBps).
I tried too to activate the compression in the client side but without success. Have you tried activate this feature on a Lotus servers? According to what I read, this feature works fine at file system backups level, but not with database modules. Have you any experience using the client side compression?
As per my knowledge if the data base backup is in bulk quantity, you can remove the nsr_parallelism option from lotus configuration file (which is located in client server)
Notes_ExecDirectory = C:\Lotus\Domino
NSR_BACKUP_PATHS = D:\Lotus\Domino\Data
NSR_NOTES_INI_PATH = C:\Lotus\Domino\notes.ini
NSR_SKIPDBERRORS = TRUE
NSR_NOTES_CONNECT_TIMEOUT = 0
PATH = "C:\Lotus\Domino; D:\Lotus\Domino\Data;C:\Program Files\EMC NetWorker\nsr\bin"
as you can see ther is no parallelism parameter present here .Doing like this the database is gonna split into multiple streams as per required and your backup time is gonna reduce.
try it once hope it works