BUFFALO TS5420DN4804 – TeraStation 5020 48TB 4-Bay 10GbE Desktop NAS
Overview
The BUFFALO TS5420DN4804 is a TeraStation 5020 Series 4-bay desktop NAS configured with four 12TB NAS-grade hard drives for 48TB of total installed storage. It provides one 10GbE RJ-45 interface and two 1GbE RJ-45 interfaces for high-speed network storage and standard Gigabit Ethernet connectivity.
The system supports software RAID configurations including RAID 6, RAID 5, RAID 10, RAID 1, and RAID 0. The exact TS5420DN4804 configuration is shipped with RAID 6 enabled, providing 24TB of usable capacity according to Buffalo's RAID capacity table.
Technical Information
The TS5420DN4804 uses an Annapurna Labs Alpine AL524 2.0GHz quad-core 64-bit processor and 8GB of DDR4 ECC memory. The four installed drives are 12TB NAS-dedicated HDDs in a 3.5-inch desktop chassis.
Storage management includes snapshots, immutable snapshots on supported firmware, copy-on-write, metadata duplication, scheduled and historical backup functions, replication, failover, abnormal file activity detection, remote management, cloud backup, and iSCSI volume backup. Buffalo also specifies iSCSI target and iSCSI volume capabilities for this exact product.
Compatibility
The TS5420DN4804 uses four 3.5-inch NAS-grade HDDs and supports RAID 6, RAID 5, RAID 10, RAID 1, and RAID 0. The platform supports hot-swappable drives and hot spares.
Network connectivity consists of one 10GBASE-T RJ-45 port and two 1000BASE-T RJ-45 ports. The 10GbE interface supports 10Gbps, 5Gbps, 2.5Gbps, 1Gbps, and 100Mbps operation, while the Gigabit interfaces support 1000Mbps, 100Mbps, and 10Mbps Ethernet. Supported network services include CIFS/SMB, AFP, FTP/FTPS/SFTP, and NFS.
Key Features
- 48TB installed capacity using four 12TB NAS-grade HDDs.
- Four-bay desktop NAS chassis with all four bays populated.
- One 10GbE RJ-45 port plus two 1GbE RJ-45 ports.
- AL524 2.0GHz quad-core processor with 8GB DDR4 ECC memory.
- Factory RAID 6 configuration with 24TB effective capacity and support for RAID 5/10/1/0.
Applications
- Centralized business file storage
- Departmental shared network storage
- Backup and data protection infrastructure
- 10GbE network storage environments
- NAS-based replication and failover deployments
DC Supplies Product Note
The TS5420DN4804 is the 48TB four-drive configuration of the TeraStation 5020 TS5420DN platform. Buffalo specifies four 12TB drives, factory RAID 6, and 24TB effective RAID 6 capacity for this exact MPN.
Specifications
| Specification | Details |
|---|
| Brand | BUFFALO |
| Part Number / MPN | TS5420DN4804 |
| Product Type | Desktop NAS |
| Series | TeraStation 5020 / TS5420DN |
| Form Factor | Desktop |
| Drive Bays | 4 |
| Included Drives | 4 |
| Drive Configuration | 4 x 12TB |
| Total Installed Capacity | 48TB |
| Drive Type | NAS-grade HDD |
| Drive Size | 3.5-inch |
| Factory RAID | RAID 6 |
| RAID 6 Effective Capacity | 24TB |
| RAID 5 Effective Capacity | 36TB |
| RAID 10 Effective Capacity | 24TB |
| RAID 1 Effective Capacity | 12TB |
| RAID 0 Effective Capacity | 48TB |
| Supported RAID | RAID 6/5/10/1/0 |
| Processor | Annapurna Labs Alpine AL524 |
| Processor Speed | 2.0GHz |
| CPU Cores | 4 |
| Memory | 8GB DDR4 ECC |
| 10GbE Network Ports | 1 |
| 1GbE Network Ports | 2 |
| Network Connector | RJ-45 |
| 10GbE Supported Speeds | 10Gbps/5Gbps/2.5Gbps/1Gbps/100Mbps |
| 1GbE Supported Speeds | 1000Mbps/100Mbps/10Mbps |
| USB Ports | 2 x USB 3.2 |
| Network Protocol | TCP/IP |
| Network File Services | CIFS/SMB, AFP, FTP/FTPS/SFTP, NFS |
| iSCSI Target | Yes |
| Snapshots | Yes |
| Immutable Snapshots | Yes, firmware Ver. 2.20 or later |
| Copy-on-Write | Yes |
| Replication | Yes |
| Failover | Yes |
| Hot Swap / Hot Spares | Yes |
| Abnormal File Activity Detection | Yes |
| Remote Management | Yes |
| Cloud Storage Integration | Yes |
| SSD Caching | No |
| Power Supply | Internal AC 100–240V, 50/60Hz |
| Maximum Power Consumption | 100W |
| Operating Temperature | 0–40°C |
| Operating Humidity | 10–85% non-condensing |
| Dimensions (W x H x D) | 170 x 215 x 230mm |
| Dimensions (W x H x D) | 6.69 x 8.46 x 9.06 in |
| Weight | Approximately 7.0kg / 15.43lb |
| Warranty | 3 years |
| Country of Origin | Japan |
| TAA Compliant | Yes |
FAQs
How much storage is included with the BUFFALO TS5420DN4804?
The TS5420DN4804 includes four 12TB NAS-grade HDDs for 48TB of total installed storage.
What is the factory RAID configuration?
Buffalo specifies RAID 6 as the factory configuration for the TS5420DN4804, with 24TB of effective RAID 6 capacity.
Which RAID levels are supported?
The system supports RAID 6, RAID 5, RAID 10, RAID 1, and RAID 0.
What network ports are provided?
The TS5420DN4804 provides one 10GbE RJ-45 port and two 1GbE RJ-45 ports.
How much memory does the TS5420DN4804 have?
The NAS has 8GB of DDR4 ECC memory and uses an Annapurna Labs Alpine AL524 quad-core processor.
Does the TS5420DN4804 support snapshots and replication?
Yes. Buffalo specifies snapshot functionality, including immutable snapshots on supported firmware, as well as replication and failover capabilities.
