Synology 8-Bay Short-Depth Rackmount NAS or Synology 2-Bay Quad-Core NAS 24TB? Which Synology Model to Buy
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You are comparing the synology 8 bay short depth rackmount NAS vs 2 bay quad core NAS 24tb. Both devices run Synology DiskStation Manager software for centralized file management. The main difference lies in capacity and form factor. One is a large, diskless rack unit designed for expansion. The other is a compact desktop unit with pre-installed storage. You must choose based on your physical space and storage needs.
Key differences
| Aspect | Synology 8-Bay Short-Depth Rackmount NAS | Synology 2-Bay Quad-Core NAS 24TB |
|---|---|---|
| Drive Bays | 8 Bay | 2-Bay |
| Included Storage | Diskless | 24TB |
| RAM Capacity | 4GB RAM | 2 GB DDR4 non-ECC SODIMM |
| Processor | not listed | Intel Celeron J4125 Quad-Core |
| Network Connectivity | PCIe SFP+ or RJ-45 (expandable) | 1 x 2,5 GbE und 1GbE |
| Form Factor | Rackmount (Short Depth) | Desktop |
Which one should you choose?
Choose Synology 8-Bay Short-Depth Rackmount NAS if
- You need to expand storage capacity beyond 24TB by adding your own drives.
- You require a rackmount form factor for server room installation.
- You want higher base RAM for multi-user environments.
Choose Synology 2-Bay Quad-Core NAS 24TB if
- You want a complete solution with 24TB of storage included.
- You need a compact desktop unit for home or small office use.
- You prefer a system with a specified quad-core processor.
Verdict: Choose the 8-bay rackmount if you need maximum expandability and have rack space. Pick the 2-bay desktop if you want a ready-to-use solution with pre-installed storage. The choice depends entirely on your physical space and initial capacity requirements.
8-Bay Rack vs 2-Bay Desktop
storage capacity
The Synology 8-Bay Short-Depth Rackmount NAS (RS1221+) is sold as a diskless unit. It provides eight drive bays for you to populate with your own hard drives. This approach offers flexibility in total capacity depending on the drives you choose. In contrast, the Synology 2-Bay Quad-Core NAS 24TB comes with 24TB of included storage pre-installed. It features only two drive bays. This model provides immediate usable space without the need for separate drive purchases. You get a fixed capacity right out of the box with the 24TB model, while the rack unit requires additional investment in drives to reach any storage level.
number of bays
Form factor and expansion potential differ significantly between these two models. The RS1221+ is an 8-bay unit designed for environments requiring higher density storage. It allows you to house eight drives in a short-depth rackmount chassis. The Synology 2-Bay Quad-Core NAS 24TB is limited to two drive bays. This constraint limits your maximum drive count and potential future expansion within the same chassis. If you need to store large volumes of data or manage many users, the eight-bay chassis offers more slots. The two-bay model is better suited for smaller setups where space is limited and high density is not required.
ram capacity
Memory specifications impact how well each NAS handles concurrent tasks and caching. The Synology 8-Bay Short-Depth Rackmount NAS includes 4GB of RAM. This higher memory allocation supports more simultaneous connections and complex operations in multi-user environments. The Synology 2-Bay Quad-Core NAS 24TB comes with 2GB of DDR4 non-ECC SODIMM memory. However, this unit allows for expansion. You can upgrade the RAM up to 6GB by adding a 4GB module. Both units start with different baseline capacities, but the 8-bay model offers double the initial memory without requiring hardware modifications.
processor
Processing power varies between the two devices based on their target use cases. The Synology 2-Bay Quad-Core NAS 24TB is equipped with an Intel Celeron J4125 Quad-Core processor. This provides dedicated computing power for file management and applications. The specifications for the Synology 8-Bay Short-Depth Rackmount NAS do not list a specific processor model or core count in the provided data. We cannot compare the raw processing speed or core count directly. However, the rack unit is designed for high throughput, claiming up to 2,315 MB/s read performance, which suggests robust internal hardware despite the missing spec details.
network connectivity
Network capabilities are crucial for data transfer speeds. The Synology 2-Bay Quad-Core NAS 24TB includes a 2.5GbE port and a 1GbE port. This combination allows for faster local network connections than standard gigabit speeds. The Synology 8-Bay Short-Depth Rackmount NAS features a PCIe slot. You can install a PCIe SFP+ or RJ-45 network card from the compatibility list to improve network performance by up to five times. This modular approach allows you to choose the exact network interface you need. The 2-bay unit offers fixed connectivity, while the rack unit offers customizable high-speed options.
form factor
Physical size and installation method are key differences. The Synology 8-Bay Short-Depth Rackmount NAS is designed for rack mounting. It has a short depth of 298 mm, making it suitable for tight rack spaces. Its dimensions are 16.5 inches wide and 8.5 inches high. The Synology 2-Bay Quad-Core NAS 24TB is a desktop unit. It weighs 4.41 pounds and does not require rack installation. This makes it easier to place on a desk or shelf. The rack unit is built for data centers or server rooms, while the 2-bay model is intended for home or small office use.
Which Synology NAS fits your needs
Businesses needing high capacity and redundancy
Choose the RS1221+ for its eight drive bays. It supports up to 2,315 MB/s read speeds. You can configure two units for high availability clusters. The short depth fits standard racks. This model offers scalability for multi-user environments without pre-installed storage.
Users wanting pre-loaded storage and simplicity
The DS225+ comes with 24TB of included storage. It features a quad-core Intel processor and 2GB of RAM. You get 2.5GbE network connectivity for faster transfers. The Btrfs file system provides advanced data protection. This unit is ready to use immediately with no extra drive purchases.
Small offices requiring flexible expansion options
Select the DS225+ if you want to expand memory later. You can upgrade the RAM from 2GB to 6GB. It supports Synology Hybrid RAID for flexible management. The compact size suits small spaces. You benefit from modern connectivity options and efficient processing power for everyday tasks.
The products compared
Synology 8-Bay Short-Depth Rackmount NAS
Best for: high-density rack storage
- Drive Bays
- 8 Bay
- Included Storage
- Diskless
- RAM Capacity
- 4GB RAM
- Dimensions
- 23 × 16.5 × 8.5 inches
View on Amazon: Synology 8-Bay Short-Depth Rackmount NAS Affiliate link
This is a diskless 8-bay rackmount NAS designed for multi-user environments. It offers up to 2,315 MB/s read and 1,147 MB/s write speeds. The unit features a short depth of 298 mm, fitting standard racks easily. You can expand network performance by adding a PCIe SFP+ or RJ-45 card. It also supports creating a High Availability cluster with a second unit for service uptime.
Pros
- 8-bay capacity for high storage density
- Short depth of 298 mm for rack mounting
- Up to 2,315 MB/s read performance
- Supports Synology High Availability clustering
Cons
- Sold diskless with no included storage
- Only 4GB RAM capacity
- Requires separate purchase of drive bays
Good fit if
- You need high storage density in a rack
- You want to cluster units for uptime
- You require fast read speeds for multi-user access
Skip if
- You want a pre-loaded storage solution
- You need a compact desktop NAS
- You require more than 4GB RAM
Verdict: Synology 8-Bay Short-Depth Rackmount NAS fits users needing high capacity and fast speeds in a rack. It suits those planning to cluster units for reliability rather than casual desktop use.
Synology 2-Bay Quad-Core NAS 24TB
Best for: high-capacity desktop storage needs
- Drive Bays
- 2-Bay
- Processor
- Intel Celeron J4125 Quad-Core
- RAM Capacity
- 2 GB DDR4 non-ECC SODIMM
- Included Storage
- 24TB
- RAID Support
- Synology Hybrid RAID (SHR)
- Network Connectivity
- 5GbE, 1GbE
View on Amazon: Synology 2-Bay Quad-Core NAS 24TB Affiliate link
The Synology DS225+ is a 2-bay NAS with 24TB pre-installed storage. It uses an Intel Celeron J4125 quad-core processor and 2 GB of DDR4 RAM. The system supports 2.5 GbE and 5 GbE networks. It includes Btrfs file system protection and snapshot technology. This model suits users who need high capacity in a compact desktop form factor without rackmount complexity.
Pros
- Includes 24TB of pre-installed storage
- Intel Celeron J4125 quad-core processor
- Dual 2.5 GbE and 5 GbE network ports
- Expandable RAM up to 6 GB
- Btrfs file system with snapshot support
Cons
- Only 2 drive bays limit future expansion
- 2 GB base RAM is lower than rackmount peers
- Desktop form factor cannot fit in standard 19-inch racks
Good fit if
- You need 24TB of storage immediately
- You prefer a compact desktop setup over rackmount hardware
- You want fast 5 GbE network connectivity
Skip if
- You require 8 drive bays for large-scale storage
- You need to mount the unit in a standard server rack
- You require more than 2 GB of base RAM
Verdict: Synology DS225+ 2-Bay 24TB NAS is ideal for users who prioritize high pre-installed capacity and fast networking in a small desktop footprint. It is not suitable for those who need rackmount compatibility or extensive drive bays.
Specifications side by side
| Spec | Synology 8-Bay Short-Depth Rackmount NAS | Synology 2-Bay Quad-Core NAS 24TB |
|---|---|---|
| Drive Bays | 8 Bay | 2-Bay |
| Processor | not stated | Intel Celeron J4125 Quad-Core |
| RAM Capacity | not stated | 2 GB DDR4 non-ECC SODIMM |
| Included Storage | Diskless | 24TB |
| RAID Support | not stated | Synology Hybrid RAID (SHR) |
| Number of Bays | 8-Bay | 2-Bay |
| Network Connectivity | not stated | 5GbE, 1GbE |
| Processor Cores | not stated | Quad-Core |
| Dimensions | 23 × 16.5 × 8.5 inches | not stated |
| Weight | not stated | 4.41 pounds |
| Size | RS1221+ | 24TB |
| Color | Black | black |
| Model | RS1221+ | DS225+/24TB-IW |
Frequently asked questions
Does the Synology 8-Bay Short-Depth Rackmount NAS come with hard drives installed?
No. The RS1221+ is sold as a diskless unit. You must purchase and install your own hard drives into the eight available bays. This design gives you full control over storage capacity and drive types. It suits users who want to build a custom high-density storage solution.
What is the difference in form factor between these two Synology models?
The RS1221+ is a rackmount device measuring 16.5 inches wide and 23 inches long. It fits into standard server racks. The DS225+ is a compact desktop unit. It weighs 4.41 pounds and sits on a desk. Choose the rackmount model for data centers and the desktop model for office spaces.
Which Synology NAS has more network connectivity options?
The Synology 2-Bay Quad-Core NAS 24TB offers more connectivity variety. It includes both 5GbE and 1GbE ports. The 8-Bay Rackmount model does not list specific network ports in its key attributes. You should check the full manual for the RS1221+ network details if high-speed local transfer is critical.
How much RAM does the Synology 8-Bay Rackmount NAS have?
It comes with 4GB of RAM. This memory supports the eight drive bays and background tasks. The 2-Bay model does not list its RAM capacity in the provided data. For the rackmount unit, the 4GB helps handle multiple users and concurrent file access in a high-density environment.
Is the Synology 2-Bay NAS suitable for rackmount installation?
No. The DS225+ is designed as a desktop device. It lacks the mounting hardware and form factor for standard racks. If you need rackmount compatibility, the RS1221+ is the correct choice. It is built specifically for short-depth rack installations in server rooms or IT closets.
What processor powers the Synology 2-Bay Quad-Core NAS?
It uses an Intel Celeron quad-core processor. This chip handles file management and network tasks efficiently. The 8-Bay Rackmount model does not list its processor type in the provided data. The quad-core design in the DS225+ ensures smooth performance for its two pre-installed 12TB drives.
Can I cluster the Synology 8-Bay NAS for high availability?
Yes. You can configure two RS1221+ units for high availability clusters. This setup improves reliability for critical data. The 2-Bay Desktop model is not designed for this type of clustering. The rackmount unit is built for enterprise-like redundancy and high-density storage needs.