Multiple new services can be established on the NAS by means of full-featured console access via SSH/telnet. The NAS also supports QPKG packages which can be installed and used even by inexperienced users.
QNAP currently offers software modules for the TS-219P+ which support P2P networks and download files autonomously. There are also web projects, media servers, and the Optware package management system. You can visit the manufacturer’s website to learn more about them.
We installed Western Digital’s Caviar Black WD5001AAL disks into our TS-219P+ to benchmark its performance with the Intel NASPT 1.7.0 tool. Following the latest trends, we created disk volumes with the EXT4 file system. The first diagram shows the performance of a single disk as well as of a dual-disk RAID (in RAID0 and RAID1 mode). We additionally benchmarked the NAS with a single-disk EXT3 volume.
So, the TS-219P+ can deliver a sequential data transfer speed up to 90-100 MBps even with a single disk inside. EXT4 is generally faster than EXT3. The different array types are actually similar in terms of speed, which indicates well-optimized firmware.
Overall, the TS-219P+ looks good enough against top-end NASes and deservedly has the plus sign in its model name.
Dual-disk NASes are an optimal choice if you buy your first home NAS and do not need a large-capacity multi-disk RAID. However, you are going to eventually run out of storage space even with two disks. As we've said above, the TS-219P+ differs from other NASes of its class as it has eSATA ports. The eSATA interface is going to ensure higher speed than USB 2.0. The next diagram is indicative of the limitations of USB 2.0:
The peak read and write speeds are not higher than 30-40 MBps. NTFS and HFS+ are good enough in terms of sequential read speed but have problems with small files. EXT3 and EXT4 are somewhat slower with small files, too.
Now let’s see what we have if we connect the same external disk via eSATA.
The speed is considerably higher compared to USB. On the other hand, the external controller reduces the speed by half in comparison with the internal disks. The write speed is not affected that much. Perhaps the manufacturer shouldn’t have saved on the controller and installed an ordinary Silicon Image chip instead.