VNX - Backing up Usermapper DBMS backup and compact tUserMapper and Secmap DBMS to save space for the nasdb backup. (Dell EMC Correctable)

New users were added to Active Directory to access the Datamover.

As time goes by and more and more users are added and removed from Active Directory,
New Users access the Datamover using Microsoft Windows SID which need to be mapped to UID and GID
The usermapper database will automatic create a new UID and GID from the Windows SID 
The usermapper database can get very large.
The self healing feature of the Database may not be enough for the nasdb backup to complete and require some extra manual help to compact the nasdb for it to complete.

New users were added to Active Directory to access the Datamover and therefore the usermapper become very large and could not be backup with out manual help to compact the usemapper database.

Here are the steps
Read and understand the steps
if your are not sure, don't run these steps and ask for help from a senior TSE

1. login as nasadmin


2. How many Datamovers are they all in contact state?
/nas/sbin/getreason


3. How many Active Datamovers and VDMs
nas_server -list -all


4. What is current nasdb backup stats
date ; nas_logviewer /nas/log/sys_log | grep backup | tail -20


5. what is the state of usermapper on the Datamovers
server_usermapper  ALL 


6. Just in case this is part of NAS IP Replication, is this the source or the destination
If its the source hopefully, usermapper is configure as secondary
nas_cel -list
nas_replicate -list



7. List size of the directory and files by Date time order
df -k    /celerra/backup/ /nas/var/backup/
ls -altr /celerra/backup/ /nas/var/backup/


8. What is the size of dbms items
server_dbms ALL -db -list |awk -F:  '/^Size/ { a+=$2} END { print a}' 
/nas/sbin/dbms_backup -totalsize 


9. Check what time the nasdb runs
grep backup /nas/site/cron.d/nas_sys


10. Run the nasdb backup  manualy to see the error message
/nas/sbin/nasdb_backup /nas /celerra/backup 1 


11. Run the following cmds - If there are any failures, stop and consult with a senior TSE 
server_usermapper server_2 -Export  -user   /home/nasadmin/usermapper_backup_2016_10_10_user
server_usermapper server_2 -Export  -group  /home/nasadmin/usermapper_backup_2016_10_10_group 
server_dbms server_2 -db -compact  Usermapper 
/nas/sbin/dbms_backup -totalsize 
server_dbms server_2 -db -compact  Secmap 
/nas/sbin/dbms_backup -totalsize 


12. Re-run the NASDB backup - did it work?
/nas/sbin/nasdb_backup /nas /celerra/backup 1 


13. What is current nasdb backup stats
date ; nas_logviewer /nas/log/sys_log | grep backup | tail -20


14. List size of the directory and files by Date time order after the compact
df -k    /celerra/backup/ /nas/var/backup/
ls -altr /celerra/backup/ /nas/var/backup/