Hello All,
master win 2008, NBU 7.6.0.1, 2 NBU 5220 appliance version 2.5.3 - one in each data center, AIR enabled via SLP.
nbapp1 in DC1 take backup(primary copy) and replicates to nbapp2 in DC2(copy2), then nbapp1 makes tape copy(copy 3) from primary copy.
nbapp2 in DC2 take backup(primary copy) and replicates to nbapp1 in DC1(copy2), then nbapp1 makes tape copy(copy 3) from copy 2.
nbapp1 backup around 5TB data on daily basis. nbapp2 backup around 6.6Tb data daily
on both appliance , we have this configuration:
Settings> NetBackup DataBuffers Number Show
NUMBER_DATA_BUFFERS : 128
NUMBER_DATA_BUFFERS_DISK : 128
NUMBER_DATA_BUFFERS_FT : 16 (Default)
NUMBER_DATA_BUFFERS_RESTORE : 128
Settings> NetBackup DataBuffers Size Show
SIZE_DATA_BUFFERS : 262144 (Default)
SIZE_DATA_BUFFERS_DISK : 262144 (Default)
SIZE_DATA_BUFFERS_FT : 262144 (Default)
since past few weeks few backups were found to be in hung state and slow backups which runs into production hrs. this problem is happening almost 3-4 times a week. catalo backup also taking 3 times more time. please share your suggestion how to find network choke\congestion problem.
catalog backup also goes to tape. appliance to tape copy giving good throughput. It is only happening on backups whch goes to nbapp1.