How much Space needed for MSDP deduplication database

Hi,

See below

About MSDP storage capacity
The maximum deduplication storage capacity is 64 TBs. NetBackup reserves 4
percent of the storage space for the deduplication database and transaction logs.
Therefore, a storage full condition is triggered at a 96 percent threshold.

Hello Tollboy,

the above 240GB was from applinace that is in 7.6.1.1

since you said you are using 7.6.0.3, i have verified one of my windows media server with 7.6.0.4 which is having the 55 TB MSDP space..and 77% utilization. and it occupy the 690 GB as database..( and it is not dedicated storage space)

<<EDIT>>

have also verified another media server with 55 TB MSDP and 44 % utilization and occupied 280 GB for databases.

another one iwth 55 TB MSDP space with 55% utilization and occupied only 59 GB.

i have not drill down the inside directories there may be some backup copies since they were upgraded from previous versions..

so 250 is good to go for 16 TB, however see below

<<EDIT END>>

there is a lot of changed in MSDP from 7.6.0.X to 7.6.1, that could be the one of the reasons for this change..

also since you are planing for 16 TB storage space.. having dedicated storage space is not required... ..

see the below extrace from dedup guide for 7.6, it is recommended to to go with dedicated space only with the storage media space is more than 32 TB...

Disk, with the following minimum requirements per individual data stream (read or write):
■ Up to 32 TBs of storage:
■ 130 MB/sec.
■ 200 MB/sec for enterprise-level performance.

■ 32 to 48 TBs of storage:
200 MB/sec.
Symantec recommends that you store the data and the deduplication database on separate
disk, each with 200 MB/sec read or write speed.
■ 48 to 64 TBs of storage:
250 MB/sec.
Symantec recommends that you store the data and the deduplication database on separate
disk, each with 250 MB/sec read or write speed.
These are minimum requirements for single stream read or write performance. Greater individual
data stream capability or aggregate capability may be required to satisfy your objectives for writing
to and reading from disk.