Discovery best practices

[theservicenowgu]

Looking for discovery best practices - 

   1) how many mid servers are recommended?.. Any firewall port restriction (other than opening 443) ?

   2) Windows mid server can discover Unix servers/applications or we need to install mid server on both servers (windows, Unix)?

   3) Any credential restriction ? windows we need a domain account with local admin privilege on the servers to be discovered. Accounts creation for Unix server discovery?

   4) Any requirements to discover IP switch, Storage device, Router, Network etc?

Thanks.

[chuckm]

Answers to your questions:

1) Several community articles on number of MID Servers: Best practice for MID Server Sizing? (contains great MID Server estimate calculators:  Midserver estimate Calc.xlsx and MidServer_Planning.xlsx) https://community.servicenow.com/community?id=community_question&sys_id=750f0fa1dbdcdbc01dcaf3231f96...

Best practices for MID Server setup and tuning https://community.servicenow.com/community?id=community_blog&sys_id=9d1deea5dbd0dbc01dcaf3231f961939...

MID Server system requirements in the ServiceNow Product Documentation https://docs.servicenow.com/bundle/madrid-servicenow-platform/page/product/mid-server/reference/r_MI...

From the MID server to the ServiceNow instance only 443 is required per ServiceNow Product Documentation MID Server connection prerequisites https://docs.servicenow.com/bundle/madrid-servicenow-platform/page/product/mid-server/concept/c_MIDS...

2) A Windows MID server can discover both Windows and Unix operating systems.  Several community articles with more details:
Windows discovery using MID installed on LINUX machine https://community.servicenow.com/community?id=community_question&sys_id=bce64fa5db1cdbc01dcaf3231f96...

Mid server required to discover linux servers https://community.servicenow.com/community?id=community_question&sys_id=df546caddb5a138058dcf4621f96...

3) Credential requirements for Windows:  Windows credentials https://docs.servicenow.com/bundle/madrid-servicenow-platform/page/product/credentials/reference/r_W...

Credential requirements for UNIX: SSH credentials https://docs.servicenow.com/bundle/madrid-servicenow-platform/page/product/credentials/reference/r_S...

4) Credential requirements for IP Switch, Router, Network devices: SNMP credentials https://docs.servicenow.com/bundle/madrid-servicenow-platform/page/product/credentials/concept/c_SNM...

Credential requirements for Storage Devices: Storage Discovery via SMI-S and CIM https://docs.servicenow.com/bundle/madrid-it-operations-management/page/product/discovery/reference/...

And finally, great community article for Discovery Best Practices (author Doug Shulze) https://community.servicenow.com/community?id=community_blog&sys_id=4efc26a5dbd0dbc01dcaf3231f96191a...