SIRIS 4 and NAS 4 Business features and specifications
Topic
This article provides the layout, hardware specifications, and features for Datto's SIRIS 4 Business and NAS 4 Business continuity appliances.
Environment
- Datto SIRIS 4 Business
- Datto NAS 4 Business
Index
Device Layout

Figure 1: SIRIS 4 Business / NAS 4 Business, front view

Figure 2: SIRIS 4 Business / NAS 4 Business, rear view
- 2 x USB 3.0
- Network activity LED
- Hard drive activity LED
- Power button
- Power input jack
- 1 x VGA out
- 1 x IPMI
- 2 x USB 3.0
- 2 x 1 GbE
- 4 x array drive bays
Features
Hardware Specifications
S4B1 / N4B1
| Model | S4B1 / N4B1 |
| Weight | 7.7 lb |
| Dimensions | 11" L 8.75" W 3.5" H |
| Capacity | 1 TB |
| CPU | Intel Xeon D2123IT |
| RAM | 32 GB ECC |
| Array | 3 x 500 GB (RAID 5) |
| NICs | 2 x 1 GbE |
| Dedicated OS Drive | 240 GB SSD SATA M2 |
| Transfer Drive | N/A |
| Form Factor | Desktop |
| Output Power | 250 W |
| Input Voltage | 120-240 V |
| Power Cord (Brick) | IEC C13 |
| Agent-level encryption | Supported on SIRIS |
S4B2 / N4B2
| Model | S4B2 / N4B2 |
| Weight | 7.7 lb |
| Dimensions | 11" L 8.75" W 3.5" H |
| Capacity | 2 TB |
| CPU | Intel Xeon D2123IT |
| RAM | 32 GB ECC |
| Array | 3 x 1 TB (RAID 5) |
| NICs | 2 x 1 GbE |
| Dedicated OS Drive | 240 GB SSD SATA M2 |
| Transfer Drive | N/A |
| Form Factor | Desktop |
| Output Power | 250 W |
| Input Voltage | 120-240 V |
| Power Cord (Brick) | IEC C13 |
| Agent-level encryption | Supported on SIRIS |
S4B3 / N4B3
| Model | S4B3 / N4B3 |
| Weight | 7.7 lb |
| Dimensions | 11" L 8.75" W 3.5" H |
| Capacity | 3 TB |
| CPU | Intel Xeon D2123IT |
| RAM | 32 GB ECC |
| Array | 4 x 1 TB (RAID 5) |
| NICs | 2 x 1 GbE |
| Dedicated OS Drive | 240 GB SSD SATA M2 |
| Transfer Drive | N/A |
| Form Factor | Desktop |
| Output Power | 250 W |
| Input Voltage | 120-240 V |
| Power Cord (Brick) | IEC C13 |
| Agent-level encryption | Supported on SIRIS |
LED Indicators
Network activity LED
- Flashing: Network activity detected
- Dark: No network activity detected
Hard drive activity LED
- Flashing: Hard drive activity detected
- Solid: There is no hard drive activity
NIC LEDs (located on each Ethernet port)
- Solid: Link detected
- Flashing: Network activity detected
- Dark: No link detected