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Features

The DS415+ is the second Synology NAS we've reviewed that uses Synology's DSM 5.x (DiskStation Manager) OS. The DS415play had the original DSM 5.0 release that I reviewed in-depth separately. The DS415+ was tested with an updated version of DSM 5.1.

The next two images provide a taste of the user interface for DSM 5.1. The first image shows the desktop with the System Health widget open.

Synology DiskStation DSM 5.1 Desktop

Synology DiskStation DSM 5.1 Desktop

Most of the configuration is done through the Control Panel. The image below shows the Control Panel for DSM 5.1. If you want to explore the user interface and features more in-depth, check out Synology's live demo.

Synology DiskStation DSM 5.1 Control Panel

Synology DiskStation DSM 5.1 Control Panel

While many of the features are the same as what you find in the DS415play, often the DS415+ supports higher numbers for some features. Table 2 summarizes the major differences between the two. Clearly, the DS415+ is aimed at business users with support for more connections, iSCSI targets and LUNs, etc. For some features, the DS415+ has at least double the capacity of the DS415play.

  DS415+ DS415play
Maximum file system size 108 TB 16 TB
Maximum Internal Volume # 512 256
Maximum iSCSI Target # 32 10
Maximum iSCSI Lun # 256 10
Maximum Shared Folder 512 256
Connections 512 256
Maximum # IP Cameras 40 15
Maximum VPN Connections 20 15
Cloud Station Max concurrent file transfers 512 256
Maximum Concurrent Download Tasks 80 50
Table 2: Specification differences between the DS415+ and the DS415play

See the DSM 5.0 review for a full rundown on Synology's latest OS' features.

Performance

Performance tests were run using our Revision 5 NAS test process on four-drive unencrypted RAID 0, 5 and 10 volumes using four Seagate NAS 3 TB (ST3000VN000) drives (Synology supplied) with a 1 Gbps LAN connection. The firmware installed was DSM 5.1-5004 Update 2.

The DS415+'s Benchmark Summary below shows Windows File Copy read and write performance was about the same for RAID 0. RAID 5 showed the largest variation between write performance (109 MB/s) and read performance (93 MB/s). For all RAID levels, Windows file copy and NASPT File Copy write operations were faster than reads. The fastest performance was RAID 0 NASPT File Copy to NAS (write) at 117 MB/s; the slowest was RAID 5 File copy read at 93 MB/s.

Synology DiskStation DS415+ Benchmark Summary

Synology DiskStation DS415+ Benchmark Summary

Table 3 summarizes Windows and NASPT File Copy performance for all three RAID modes tested.

  RAID 0 RAID 5 RAID 10
File Copy Write Performance 109.4 109.3 107.2
[NASPT] File Copy To NAS (write) 117.1 114.8 112.8
File Copy Read Performance 107.7 93.0 103.4
[NASPT] File Copy From NAS (read) 102.2 97.8 104.7
Table 3: File Copy and NASPT File copy comparison (MB/s)

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