BUFFALO TS51220RH6404 – TeraStation 5020 64TB 12-Bay 2U Rackmount NAS
Overview
The BUFFALO TS51220RH6404 is a TeraStation 5020 Series 12-bay rackmount NAS configured with four 16TB enterprise-grade CMR hard drives for 64TB of installed raw storage. The 2U chassis provides eight additional drive bays for future expansion. It is designed for business and enterprise environments requiring centralized network storage, data protection, backup, and high-speed Ethernet connectivity.
Technical Information
The TS51220RH6404 uses an Annapurna Labs Alpine AL524 2.04GHz quad-core processor with 16GB DDR4 memory. Storage supports RAID 0, 1, 5, 6, 10, and JBOD, with RAID 6 configured at shipment. The system also supports hot swapping and hot spares.
Storage and data-management capabilities include Btrfs, snapshots, snapshot backup, replication, failover, rapid RAID changes, iSCSI, iSCSI backup, abnormal login and file activity detection, Active Directory integration, SNMP, UPS support, remote configuration, and cloud service integration.
Compatibility
The NAS provides two 10GBASE-T and two 1000BASE-T RJ-45 network ports. Supported Ethernet standards include 10GBASE-T, 5GBASE-T, 2.5GBASE-T, 1000BASE-T, 100BASE-TX, and 10BASE-T. Supported network services include CIFS/SMB, AFP, FTP/FTPS/SFTP, and NFS.
The TS51220RH series supports enterprise-grade HDDs and Buffalo lists the OP-HDHU2 series as compatible hard drives. The system also supports Windows 11, Windows 10, Windows 8.1, Windows Server 2022, Windows Server 2019, and macOS 10.13 or later.
Key Features
- 64TB installed capacity using four 16TB enterprise-grade CMR HDDs
- 12-bay 2U rackmount chassis with eight available drive slots
- 2 x 10GBASE-T and 2 x 1000BASE-T network ports
- 16GB DDR4 memory with Annapurna Labs AL524 2.04GHz quad-core processor
- RAID 0/1/5/6/10/JBOD with RAID 6 configured at shipment
Applications
The TS51220RH6404 is suited to centralized business file storage, departmental and enterprise NAS deployments, network backup, shared storage, virtualization backup, and rack environments requiring high-speed network access with additional drive-bay capacity for future expansion.
DC Supplies Product Note
The exact TS51220RH6404 configuration contains four 16TB enterprise-grade HDDs in a 12-bay 2U rackmount chassis, leaving eight drive bays unpopulated. Buffalo identifies RAID 6 as the shipment configuration; usable capacity depends on the selected RAID level and storage configuration.
Specifications
| Specification | Details |
|---|
| Brand | BUFFALO |
| Part Number / MPN | TS51220RH6404 |
| Product Type | Enterprise Rackmount NAS |
| Series | TeraStation 5020 / TS51220RH |
| Form Factor | 2U Rackmount |
| Drive Bays | 12 |
| Included Drives | 4 x 16TB |
| Available Drive Slots | 8 |
| Total Installed Capacity | 64TB |
| Drive Type | Enterprise-grade HDD, CMR |
| Drive Interface | SATA 6Gbps |
| Supported RAID | RAID 0, 1, 5, 6, 10, JBOD |
| Factory RAID | RAID 6 |
| CPU | Annapurna Labs Alpine AL524 |
| CPU Speed / Cores | 2.04GHz / Quad-Core |
| Memory | 16GB DDR4 |
| 10GbE Ports | 2 x 10GBASE-T |
| 1GbE Ports | 2 x 1000BASE-T |
| Supported Ethernet Speeds | 10Gbps, 5Gbps, 2.5Gbps, 1Gbps, 100Mbps, 10Mbps |
| USB Ports | 2 x USB 3.2, 2 x USB 2.0 |
| Network Protocol | TCP/IP |
| Network File Services | CIFS/SMB, AFP, FTP/FTPS/SFTP, NFS |
| Snapshots | Supported |
| iSCSI | Supported |
| Hot Swapping | Supported |
| Hot Spares | Supported |
| Cloud Integration | Dropbox, Amazon S3, Wasabi, Box, Microsoft Azure, OneDrive |
| Virtualization Backup | VMware and Microsoft Hyper-V compatible |
| Power Supply | Internal AC 100–240V, 50/60Hz; optional dual power supply |
| Maximum Power Consumption | 500W |
| Operating Temperature | 0–40°C |
| Operating Humidity | 10–85% non-condensing |
| Dimensions | 29.0 x 18.9 x 3.4 in (L x W x H) |
| Dimensions, Metric | 736.9 x 480.1 x 86.4mm |
| Weight | 55.37 lb |
| Warranty | 5 years with product registration |
FAQs
How much storage is included with the TS51220RH6404?
The TS51220RH6404 includes four 16TB enterprise-grade HDDs for 64TB of total installed raw storage.
How many drive bays are available?
The system has 12 drive bays. Four are occupied by the included 16TB drives, leaving eight drive slots available for expansion.
What RAID levels does the TS51220RH6404 support?
The system supports RAID 0, RAID 1, RAID 5, RAID 6, RAID 10, and JBOD. Buffalo specifies RAID 6 as the shipment configuration for this series.
How many 10GbE ports are included?
The TS51220RH6404 provides two 10GBASE-T ports along with two 1000BASE-T ports, all using RJ-45 connectivity.
Does the TS51220RH6404 support SSD caching?
Yes. Buffalo identifies SSD caching as an add-on option for the TS51220RH series using compatible SSDs sold separately.
What processor and memory are installed?
The NAS uses an Annapurna Labs Alpine AL524 2.04GHz quad-core processor and 16GB DDR4 memory.
