I tested the DS413j with DSM 4.1-2647 firmware, using our NAS test process with RAID 0, 5 and 10 volumes. As is our standard practice, four drives were configured in each volume type.
Windows File Copy tests were fairly consistent for RAID 0, 5 and 10 write at 44, 50 and 48 MB/s, respectively. But read performance changed significantly from mode to mode measuring 67, 87 and 78 MB/s for the three modes tested.
Synology DS413j DiskStation benchmark summary
Intel NASPT File Copy results for write benchmarks tended to run about 20 MB/s higher for write and slightly lower for read.
iSCSI performance of 34 MB/s for write and 51 MB/s once again shows an imbalance between write and read performance.
I ran Attached backup tests with the external test drive formatted in FAT, EXT3 and NTFS. But with only USB 2.0 ports to work with, the best the NAS could do was 21 MB/s to the drive formatted in EXT3. Network backup to a DeltaCopy target on our NAS Testbed system was pretty slow at only 17 MB/s.
For a competitive look, I used the NAS Finder to ferret out four-bay Kirkwood-based NASes and came up with only two others tested with the current benchmark process, the QNAP TS-412 and now-discontinued TS-419P+ (replaced by the more expensive TS-419P II). Of the two, the 419P+ is the more directly comparable, since it uses the same Marvell 88F6282 1.6 GHz processor. The TS-412 uses a 1.2 GHz 88F6281.
The composite below shows Windows and NASPT RAID 5 file copy write and read results for the three NASes, with the DS413j taking top spot in all four comparisons. Note however, that the Windows method results were so close between the DS413j and TS-419P+, that I doubt you would notice the difference in real-world use.
Synology DS413j NASPT RAID 5 File copy comparison
Since many NASes support folder encryption, I've had requests to test performance with it engaged. I'm not sure I'll be adding this benchmark for all NASes, but I did run it on the DS413j with the results shown in Table 2. Intel NASPT benchmarks are listed first, followed by the two Windows-based tests.
|File Copy to NAS||11.81||73.91||-84|
|File Copy From NAS||11.05||82.94||-87|
|Directory Copy To NAS||5.12||14.82||- 65|
|Directory Copy From NAS||7.76||18.5||-58|
|HD 1 play, 1 record||16.46||72.40||-77|
|HD 4 play||16.22||96.31||-83|
|Windows File copy write||9.64||49.84||-81|
|Windows File copy read||19.30||87.31||-78|
Table 2: DS413j RAID 5 With and Without encryption
Even though Synology lists a "Hardware Encryption Engine" in the 413j's specs, the test results show you'll still pay a stiff penalty when using encrypted folders.
Use the NAS Charts to further explore and compare the DS413j's performance
At $380, the DS413j doesn't really meet my definition of inexpensive. But, as four-bay NASes go, it's almost as cheap as you can get. QNAP's older TS-412 will let you save a few bucks, but you'll pay for the savings with lower performance.