Compare the 214 and 216 NAS

NAS:ioSafe 216ioSafe 214
Processor:1.3 GHz Dual Core 1.06 Ghz Dual Core
Memory:512MB DDR3512MB DDR3
Encryption:AES-NI hardware encryption engineNo dedicated encryption processor
USB Ports:1X USB 2.0 port, 2X USB 3.0 ports1X USB 2.0 port, 2X USB 3.0 ports
File System Support:EXT4, EXT3 (External Disk Only), FAT (External Disk Only), NTFS (External Disk Only)EXT4, EXT3 (External Disk Only), FAT (External Disk Only), NTFS (External Disk Only)
Performance:111 MB/s reading and writing, while ensuring encrypted data transmissions at over 112 MB/s reading and 109 MB/s writing100 MB/sec reading and writing, with encrypted data transmissions at 31 MB/s reading and 16 MB/s writing
ioSafe 216Processor:1.3 GHz Dual Core
Memory:512MB DDR3
Encryption:AES-NI hardware encryption engine
USB Ports:1X USB 2.0 port, 2X USB 3.0 ports
File System Support:EXT4, EXT3 (External Disk Only), FAT (External Disk Only), NTFS (External Disk Only)
Performance:111 MB/s reading and writing, while ensuring encrypted data transmissions at over 112 MB/s reading and 109 MB/s writing
ioSafe 214Processor:1.06 Ghz Dual Core
Memory:512MB DDR3
Encryption:No dedicated encryption processor
USB Ports:1X USB 2.0 port, 2X USB 3.0 ports
File System Support:EXT4, EXT3 (External Disk Only), FAT (External Disk Only), NTFS (External Disk Only)
Performance:100 MB/sec reading and writing, with encrypted data transmissions at 31 MB/s reading and 16 MB/s writing

You're in good company with ioSafe