Performance Testing

Read Bandwidth

For this benchmark, HDTach was used. It shows the potential read speed which you are likely to experience with these enclosures.


The USB numbers are very decent but not excellent however, the eSATA average speed is down right impressive! It is really a shame that the burst numbers are just not there and it appears that this enclosure is limited to SATA 1 speeds.


Random Access Time

Once again, HDTach was used for this benchmark. This benchmark tests how quickly different areas of the drive’s memory can be accessed. A low number means that the drive space can be accessed quickly while a high number means that more time is taken trying to access different parts of the drive.


The IB-390 is very good when it comes to Random access via eSATA, posting some very low numbers; unfortunately the wheels come off when we tested via USB. It appears that Sunplus has improved the controller chip but it was at the expense of Random access speeds. To us, this is a good trade off as this unit is a eSATA unit first and only a USB enclosure when absolutely necessary.


SIS Sandra

This test was run with the removable storage benchmark in Sandra XII Standard. All of the scores are calculated in operations per second and have been averaged out from the scores of 4 test runs.


The IB-390 posts some pretty darn good numbers when connected via USB, but it really shines when it is using eSATA; posting some of the best numbers we have seen in a single bay (or JBOD configuration) enlcosure. Overall, this is one darn good performer when it comes to Sandra tests.