Here is an example of what I recommended for a Mid-Size install:
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Hardware Requirement
Required Size
Note
A
Main Application
A1
Quad core processor
2GHz or higher (4 cores)
-
A2
Memory space
8GB minimum, 12GB recommended
In case of large metadata volume 32GB are recommended
A3
Disk space
10GB minimum, 10GB recommended
All storage is primarily on the database server, the search index and metadata cache is on disk. Depending on harvesting metadata volume, and the method (2 x size of metadata)
A4
Disk I/O
140MBps
B
Database
B1
Quad core processor
2GHz or higher (4 cores)
-
B2
Memory space
8GB minimum, 32-64GB recommended
Memory requirements depend on the number and type of resources that you load into the Talend Data Catalog repository.
B3
Disk space
20GB minimum, 100GB recommended
Disk space requirements depend on the number of objects in the Talend Data Catalog repository.