granularity of cache setting

global setting means all backup task in the client share the same setting

Message was edited by:
dingding

Please find below the examples that i have read from Avamar pdf :
Hope that will answer your question.

Using cacheprefix:
If the client does not have enough memory to accommodate the cache files of
appropriate sizes, it is still possible to backup the client and get the full benefit of
appropriately-sized cache files.
The way to accomplish this is:
¿ Break the client filesystem into multiple smaller datasets.
¿ For each dataset, ensure that the maximum file and hash caches assign a
unique cacheprefix attribute.

Example: Assume a client has 5.5 million files but only 1.5 GB of RAM, one volume has 2.5 million files and three other volumes have 1 million files each. You can break this client filesystem into four different datasets. For the volume with 2.5
million files, a file cache of at least 100MB (2.5M files x 40 B/file) is required. The
next increment that accommodates this is 176MB. The other datasets could be
defined as follows:
¿ C:\ drive (2.5 M files)
filecachemax=200
hashcachemax=-16 (default)
cacheprefix=driveC
¿ E:\ drive (1.0 M files)
filecachemax=100
hashcachemax=-16 (default)
cacheprefix=driveE
¿ F:\ drive (1.0 M files)
filecachemax=100
hashcachemax=-16 (default)
cacheprefix=driveF
¿ G:\ drive (1.0 M files)
filecachemax=100
hashcachemax=-16 (default)
cacheprefix=driveG

Configure cacheprefix in the dataset by setting Attribute = cacheprefix and
Attribute Value = driveC.

The following cache files are located in the Avamar /var directory on the client:
¿ driveC_f_cache.dat
¿ driveC_p_cache.dat
¿ driveE_f_cache.dat
¿ driveE_p_cache.dat
¿ driveF_f_cache.dat
¿ driveF_p_cache.dat
¿ driveG_f_cache.dat
¿ driveG_p_cache.dat
Ensure adequate disk space is available to accommodate the additional file and
hash caches.
When specifying various cacheprefix values, ensure that new cache files are
excluded from the backups. The cache files are large and have extremely high
change rates.

Thanks and Regards,

Randeep Singh