Aerospike writes in blocks sized by the write-block-size parameter. Depending on your SSDs, you may find that increasing the write-block-size may enhance, degrade, or not change the write performance of your system. The write-block-size setting also limits the maximum size of a record stored in Aerospike. Currently the max at which you may set write-block-size is 1 MB.
On older generation SSDs, we found that we achieved higher performance with a write-block-size set to 128KB; however, with modern SSDs, we have seen that we often achieve higher performance at the 1MB limit.