1. 3rd Party Storage Engine - Detects if a source uses a different storage engine from "WiredTiger".
2. Client Authentication with Kerberos - Detects if the source system uses Kerberos (GSSAPI) authentication mechanism.
3. Client Authentication with x509 - Detects if scanned sources use X509 client certificates for authentication.
4. Custom Certificate Authority - Detects if the cluster is using a custom certificate authority.
5. Custom Role Count - Detects if a cluster has more than 100 custom roles
6. Delayed Replica Set Member - Detects if replica set members have a delay replication setting.
7. Disabled SSL - Detects if SSL protocol is disabled
8. Disabled TLS - Detects if TLS protocol is disabled
9. Even Number of Voting Replica Set Members - Detects if an odd number of voting members exists in the replica set
10. Hardware Storage Encryption - Detects if storage encryption at rest enabled
11. Hidden Replica Set member - Detects if one of the replica set members is configured as "hidden".
12. High Collection and Index Count - Detects if source system contains more than 100,000 collections and indexes
13. High Connection Limit - Detects if the source system has the TCP connection limit set above 128,000
14. High CPU Count - Detects if CPU count on source system hosts exceeds 96
15. High Replica Set Member Count - Detects if source system employs more than 3 data-bearing nodes per replica set
16. High Shard Count - Detects if the number of shards in the source system exceeds 50
17. High ulimit - Detects if the setting of maxOpenFiles is more than 1048576
18. Journaling Disabled - Detects if "Journaling" is disabled
19. Jumbo Chunks - Detects if "Jumbo chunk" exists in the source system. Jumbo chunks are not moved by the balancer and over time may cause asymmetric load, hot-spots, and performance issues.
20. Large Host Memory - Detects if the memory on any individual host of the cluster exceeds 360 GB
21. Large Storage Size - Detects if storage on any individual host of the cluster exceeds 4 TB
22. Minimum Migration Tool supported version - Detects if mongod versions are below 2.6
23. No Authentication - Detects if source system does not have authentication enabled
24. Non-MongoDB Distribution - Identifies if the MongoDB distribution is 3d party (e.g Percona)
25. Old MongoDB Version - Identifies if any instance in the cluster has a version below 4.0.0
26. Shard Storage Size - Detects if one of the shards has more than 2TB of data
27. Short Oplog Time Span - Identifies if oplog time span from earliest to latest recorded operation is short compared to the data size on the instance.
28. Single Data-Bearing Node - Identifies if any replica set in the system running with only one configured host
29. SSL Enabled - Identifies if SSL protocol is enabled in the system
30. Standalone Instance - Identifies if the scanned MongoDB source is a standalone server.
31. Standalone Shard - Identifies if any shard in the system running with only one configured host
32. Storage Compatibility Level Flag - Detects if storage compatibility flag is being set.
33. Suspicious Replica Set Vote Setting - Detects if one or more Replica Set members in the source system are configured with a vote setting that isn't 0 or 1. Replica Set members ideally have exactly 1 or 0 votes only.
34. Tag Aware Sharding - Detects if one or more shards in the system have tags.
35. Unbalanced Sharded Collection - Identifies sharded collections with uneven distribution of data between shards.
36. Unbalanced Shards - Detects shards with significantly more data than others.
37. Unhealthy Replica Set - Detects replica sets whose members are not reachable or recovering.
38. Unsupported Authentication Mechanism - Identifies if the scanned system has deprecated MONGODB-CR authentication mechanism in configuration.
39. User Count Per Cluster - Detects if user count in source cluster exceeds 100 users
40. User Count Per Database - Detects if user count in one of the databases in the cluster exceeds 100 users
41. WiredTiger Storage Encryption - Detects if WiredTiger storage encryption is enabled.
42. Minimum Migration Tool supported version - Identifies if the version of mongo instances has version below 2.6 The MongoDB Atlas Live Migrate tool does not support versions below 2.6
43. Live Migrate requires SCRAM - Identifies if either SCRAM-SHA1 or SCRAM-SHA256 authentication mechanisms is enabled. MongoDB Atlas Live Migrate requires one of them.
44. Live Migration Support on Cluster Version - Detects if source system version is below version 3.6 and is potentially supported by MongoDB Live Migrate tool.
45. Auditing Enabled - Detects if auditing is enabled in the source system.
