| | 
November 2017 |  |  |  |
| Product | 2 Bay DiskStation NAS
DS218play | DiskStation
DS216j | 2-Bay Personal Cloud Storage
NAS326 | ReadyNAS 212
RN21200-100NES |
Company
| Synology | Synology | Zyxel | NETGEAR |
| Summary | Two bay RAID1 class entry-level NAS based on quad-core Realtek SoC with USB 3.0 and single gigabit Ethernet ports | Value priced dual-bay NAS with single Gigabit Ethernet port. Powered by dual-core Marvell CPU. | Dual-drive Marvell-based NAS with USB 3.0 ports, lots of upload/download options and support for add-in modules. | Two bay quad-core Annapura Labs based NAS with OS based on BTRFS with built-in antivirus |
| Review | Read review | Read review | Read review | Read review |
| Website | Visit Company Website | Visit Company Website | Visit Company Website | Visit Company Website |
| Date added | 2017-11-27 | 2017-01-15 | 2016-07-11 | 2015-10-22 |
| Price | $ 248
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| RAID Class | RAID1 | RAID1 | RAID1 | RAID1 |
| OS | Linux | Linux | Linux | Linux |
| CPU | SoC-4 | SoC-2 | SoC-1 | SoC-4 |
| CPU Detail | Realtek RTD1296 quad-core @ 1.4 GHz | Dual core Marvell ARMADA-385 88F6820 @ 1GHz | Marvell Armada 38X 88F6810-A0 @ 1.33 GHz | Annapurna Labs Alpine quad-core AL21400-1400-A0-E-1AN-8-C @ 1.4 GHz |
| RAM (MB) | 1024 | 512 | 512 | 2048 |
| Upgradable | | | | |
| Flash (KB) | 8192 | 8192 | 262144 | 131072 |
| Power - Normal | 10 | 17 | 11 | 18 |
| Power - Eco | 3 | 7 | 6 | ? |
| Noise | Very Low | Very Low | Very High | Low |
| Firmware | 6.1.4-15217 Update 2 | DSM 6.0.2-8451 Update 6 | V5.11(AAZF.2) | 6.4.0 |
| Notes | | | Some features require add-in installation. | - Some features require downloaded apps |
| # of ports | 1 | 1 | 1 | 2 |
| 10GbE | | | | |
| Failover | | | | |
| Load Balance | | | | |
| Aggregation | | | | |
| Domain / AD | | | | |
| IPv6 | | | | |
| Type | SATA | SATA | SATA | SATA |
| Size | Both | Both | Both | Both |
| Number | 2 | 2 | 2 | 2 |
| Hot Swap | | | | |
| Filesystem | EXT4 | EXT4 | EXT4 | BTRFS |
| Capacity (TB) | | | | 0 |
| Drive | | 2 | | |
| USB 2.0 | 0 | | 2 | 0 |
| USB 3.0 | 2 | 2 | 1 | 3 |
| eSATA | 0 | | | 1 |
| Serial | 0 | | | 0 |
| VGA | 0 | | | 0 |
| HDMI | 0 | | | 0 |
| Indicators | | | | |
| Panel | | | | |
| Beeper | | | | |
| SMB/CIFS | | | | |
| AFP | | | | |
| NFS | | | | |
| HTTP | | | | |
| HTTPS | | | | |
| WebDAV | | | | |
| FTP | | | | |
| Secure FTP | | | | |
| Print | | | | |
| UPnP AV | | | | |
| DLNA | | | | |
| iTunes | | | | |
| Download | BT/HTTP/FTP | BT/HTTP/FTP | BT/HTTP/FTP | BT |
| Single disk | | | | |
| JBOD | | | | |
| RAID 0 | | | | |
| RAID 1 | | | | |
| RAID 5 | | | | |
| RAID 5 + spare | | | | |
| RAID 6 | | | | |
| RAID 10 | | | | |
| iSCSI Target | | | | |
| iSCSI Initiator | | | | |
| RAID Expansion | | | | |
| RAID Migration | | | | |
| Manual | | | | |
| Scheduled | | | | |
| Snapshot | | ? | | |
| Rsync | | | | |
| Rsync custom | | | | |
| FTP | | | | |
| CIFS | | | | |
| NFS | | | | |
| Scheduled Network | | | | |
| Encryption | | | | |
| Compression | | | | |
| Time Machine | | | | |
| Windows Client | | | | |
| Mac OS Client | | | | |
| Cloud | Dropbox | Google Drive | Google Drive | Other |
| Notes | Cloud backup also to Amazon Drive, Amazon S3, Google Drive, OneDrive & more | Amazon, Dropbox and many others also supported | - Also supports cloud backup to Dropbox, Memopal, ownCloud, SynBackupfree, Cyberduck and NetDrive
- Auto upload to Flickr, YouTube, FTP | - ReadyNAS Vault cloud backup |
| Idle Drive | | | | |
| Shutdown / Startup | | | | |
| Restart after power fail | | | | |
| Wake On LAN | | | | |
| UPS Sync | | | | |
means the product has this feature. Blank means is does not. ? means we can't tell.