Some strengths of LogDevice include:

- It's designed to work with a large number of logs (roughly equivalent to partitions in Kafka), hundreds of thousands per cluster is common.

- Sequencer failover is very quick, typical failover time when a sequencer node fails is less than a second.

- It supports location awareness and can place data according to replication constraints specified (e.g. replicate it in 3 copies across 2 different regions and 3 racks).

- Because of non-deterministic data placement, it is very resilient to failures in terms of write availability.

- If a node/shard fails, it detects the failure and rebuilds the data that was replicated to failed nodes/shards automatically