Synology DiskStation DS2015xs review
Synology’s DS2015xs makes 10GbE storage networks even more affordable
With its SFP+ ports and Annapurna SoC, the DS2015xs is a bit of an odd-ball NAS appliance. IP SAN write performance isn’t great but it has no problems with NAS operations and you won’t get dual 10GbE ports as standard for less than this
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Very good value; dual 10GbE SFP+ ports; Good NAS performer; Feature-rich DSM software
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10GbE transceivers increase price; Alpine SoC delivers poor iSCSI write performance
Build and installation
The chassis is almost identical to Synology's DS1815+ with eight hot-swap SATA drive bays at the front partnered by a set of status LEDs showing network port activity and system status. Along with the two SFP+ ports at the rear, you get a pair of standard Gigabit and two USB 3 ports as well.
The high-speed Infiniband port can be used to increase storage using Synology's 12-bay DX1215 expansion unit. With a wide range of 6TB drives now certified, this allows maximum capacity to be pushed to a healthy 120TB.
Installation is nicely handled by Synology's discovery web portal as it found the appliance on our network and offered to download the latest DSM software and set it up for us. For testing, we slipped a triplet of 4TB WD Red NAS drives into the tool-less drive carriers and left the routine to create a Synology Hybrid RAID (SHR) array for us.
SHR allows you to mix and match drives of different makes and capacities in the same array without taking a hit on usable capacity. However, it's worth looking at the various storage configuration options available before you go ahead.
For our single SHR volume, we created multiple NAS shares and iSCSI file-level targets where the latter supports thin provisioning, cloning and scheduled LUN snapshots. For performance optimised block-based iSCSI targets, you create a disk group instead but the drawback is you can't use thin provisioning, cloning or snapshots.
DSM 5.1 offers a wealth of cloud backup and file syncing apps
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