Hi Robert,
Basically, the disk is the most important component for the BIM Server because its operations are highly I/O intensive. We usually do not recommend external disks, because in most of the cases these disks are not enterprise level solutions, and cannot meet the necessary requirements.
- BIM Server needs at least 100 MB/s read AND write speed for the proper operation.
- The connecting cable(s) must be able to handle the above speed as well. E.g.: connecting with one 1 GBit Ethernet cable is not enough because that means circa 125 MB/s for the read AND write operations, which would be only 62 MB/s for each.
- The BIM Server must have full access to the disk.
- As you mentioned, the disk must be mounted before BIM Server starts and the disk must be accessible at all time > because of this the best if the external solution has an own power supply.
- If other applications also use the same disk – for example you want to use the same disk as a file server, which operations are also highly I/O intensive – then the disk and the cable must be able to handle the load when teamwork users and file server users use the disk at the same time (the file server and the BIM Server will be competing against each other for the resources).
The mentioned solution – Synology 1515+ – meets the above, so if you choose reliable and fast HDD into it (min. 7200 rpm), then it is okay.
Otherwise how large project do you work on in teamwork? If you have many large projects (average 2-3 GB), then maybe a RAID solution connected by thunderbolt directly just to the server machine is a better choice (e.g.: Promise Pegasus, LaCie).
Kind regards,
Istvan
István Moharos
Manager, Technical Services
GRAPHISOFT