The Promise NS4300N delivered average data transfer rates, but could not quite live up to expectations in some of the tests. The NS4300N was a little behind its competition with the benchmarks that focus on multimedia, for example, and the streaming of HD content. On the other hand, the NAS unit was very good when it came to handling lots of small files.
Unlike in the other RAID modes, the transfer rates in RAID 5 mode were too erratic. As a result, we would not recommend operating this NAS unit with a RAID 5 configuration. The RAID 10 mode delivered the most balanced results in our benchmarks.