Looking Beyond the Seagate Exos 20TB SAS Renewed? 6 Alternatives Worth a Look

Comparing alternatives to Seagate Exos 20TB

Toshiba 14TB Enterprise 7200 RPM HDD (Renewed)

The Toshiba 14TB Enterprise drive swaps SAS connectivity for SATA, making it compatible with standard consumer and entry-level enterprise motherboards. You lose the raw bandwidth of the 12Gb/s SAS interface, gaining broader hardware compatibility instead. The capacity drops to 14TB, which may limit dense storage arrays but reduces total cost per unit. It retains the 7200 RPM rotational speed and 256MB cache, ensuring similar burst performance for individual file operations. The helium-sealed design matches the Seagate Exos approach for thermal efficiency and reliability. Choose this if your server lacks SAS HBA cards or if you need slightly less capacity with familiar SATA connectors.

Western Digital RE 4TB 7200 RPM Hard Drive

This Western Digital RE drive offers significantly lower capacity at 4TB, targeting users who prioritize reliability over bulk storage. It uses SATA instead of SAS, which simplifies integration but reduces maximum throughput potential. The 64MB cache is much smaller than the 256MB in the Exos X20, which may impact performance during large sequential transfers or heavy random I/O workloads. It maintains the 7200 RPM speed, keeping seek times competitive. This option suits small enterprise setups or nearline storage tiers where space is constrained. It is not a direct replacement for high-density data centers but works well for specific archival or boot volume needs where 20TB is excessive.

Seagate Exos X14 14TB Renewed Enterprise HDD

The Seagate Exos X14 14TB model reduces capacity from 20TB to 14TB while switching from SAS to SATA interface. This change allows use in systems without SAS controllers, offering greater flexibility for mixed-usage environments. It keeps the 7200 RPM rotational speed, preserving performance characteristics for enterprise workloads. The drive lacks the specific cache size data in the provided specs, but the SATA interface generally introduces slightly higher latency compared to SAS. It is ideal for users who verified condition and SATA compatibility are more important than maximum raw capacity. This model serves as a practical mid-tier option for enterprises scaling out storage without investing in expensive SAS infrastructure.

MFerraz 6TB Enterprise 7200 RPM Hard Drive

The MFerraz 6TB drive provides a much smaller 6TB capacity, targeting moderate NAS setups where 20TB is unnecessary. It uses SATA connectivity instead of SAS, ensuring compatibility with a wide range of NAS enclosures and servers. The 7200 RPM speed matches the Exos X20, maintaining similar access times for data retrieval. It includes a 256MB cache, which helps manage data flow efficiently despite the lower capacity. This drive is suitable for users who need reliable performance for smaller datasets or as part of a larger array where individual drive size is less critical. It offers a cost-effective solution for home or small office NAS systems that do not require enterprise-grade density.

MDD 14TB 7200RPM NAS Hard Drive

The MDD 14TB NAS drive offers 14TB capacity, which is less than the 20TB Exos but more than smaller alternatives. It uses SATA instead of SAS, providing broader compatibility with consumer and prosumer NAS devices. The 7200 RPM speed ensures consistent performance for media streaming and file serving. The 256MB cache supports efficient data buffering during heavy read/write operations. This drive is designed for NAS systems needing reliable enterprise-class performance without the premium of larger capacities. It is a practical choice for users who prioritize SATA connectivity and verified condition over maximum storage density. It fits well in multi-bay enclosures where balanced capacity and speed are more important than raw volume.

Seagate Enterprise 4TB Internal Hard Drive

This Seagate 4TB Enterprise drive offers significantly lower capacity at 4TB, targeting users with limited space or specific slot requirements. It uses SATA instead of SAS, which simplifies integration but reduces maximum throughput. The 128MB cache is half the size of the Exos X20’s 256MB, which may affect performance in large file transfers. It maintains 7200 RPM speed, keeping seek times competitive. This model is ideal for small capacity NAS slots or as a high-performance component in hybrid arrays. It serves users who do not need large individual drive capacities but value reliability and rotational speed. It is not a direct replacement for high-density storage but works well for boot volumes or specific application data.

Quick picks

Our 7 picks

1 Best overall

Seagate Exos 20TB SAS Renewed Hard Drive

Best for: Enterprise servers requiring high capacity

Storage Capacity

20TB

Hardware Interface

SAS 12Gb/s

Rotational Speed

7200RPM

Cache Size

256MB

Dimensions

5.79 × 4.01 × 1.03 inches

Weight

1.5 pounds

View on Amazon: Seagate Exos 20TB SAS Renewed Hard Drive Affiliate link

This Seagate Exos X20 is a 20TB enterprise drive designed for hyperscale environments. It uses a SAS 12Gb/s interface and spins at 7200 RPM with 256MB of cache. The helium-sealed build ensures robustness. You need a server with compatible SAS controllers and backplanes. It suits users who require high capacity and low latency for large data transfers.

Pros

• 20TB storage capacity
• SAS 12Gb/s interface
• 7200 RPM rotational speed
• 256MB cache size
• Helium side-sealing weld technology

Cons

• Requires SAS-compatible server hardware
• Warranty depends on reseller
• Not compatible with standard SATA backplanes

Good fit if

• You need maximum storage density in a single drive
• You have servers with SAS controllers
• You prioritize low latency for large transfers

Skip if

• You use standard consumer desktops
• You only have SATA ports available
• You want a fixed manufacturer warranty

Verdict: Seagate Exos X20 20TB SAS Drive fits data centers needing high capacity and speed. It is ideal for enterprise users with SAS infrastructure. It is not for home users.

2 Also great

Toshiba 14TB Enterprise 7200 RPM HDD (Renewed)

Best for: Users needing 14TB SATA storage

Storage Capacity

14TB

Form Factor

3.5"

Hardware Interface

SATA 6.0Gb/s

Rotational Speed

7200RPM

Cache Size

256MB

Dimensions

7.5 × 5.5 × 2.5 inches

View on Amazon: Toshiba 14TB Enterprise 7200 RPM HDD (Renewed) Affiliate link

This Toshiba MG07ACA14TE offers 14TB of storage in a 3.5-inch form factor. It uses a SATA 6.0Gb/s interface and spins at 7200RPM with 256MB of cache. The drive features a helium-sealed design for reliability. It is suitable for users needing high-capacity enterprise storage in a renewed condition.

Pros

• 14TB storage capacity
• 7200RPM rotational speed
• 256MB cache size
• Helium-sealed design

Cons

• 14TB capacity is lower than the 20TB Seagate Exos X20
• SATA interface is slower than the SAS 12Gb/s connection on the Exos X20
• Renewed condition may have limited warranty coverage

Good fit if

• You need 14TB of storage
• You prefer SATA connectivity
• You want a helium-sealed drive

Skip if

• You require 20TB capacity
• You need SAS connectivity
• You prefer new condition drives

Verdict: Toshiba 14TB Enterprise HDD provides reliable enterprise storage with a helium-sealed design. It fits users who need 14TB capacity and SATA connectivity.

3 Also great

Western Digital RE 4TB 7200 RPM Hard Drive

Best for: smaller capacity nearline enterprise storage

Storage Capacity

4TB

Form Factor

3.5in

Hardware Interface

SATA 6.0Gb/s

Rotational Speed

7200 RPM

Cache Size

64MB

Dimensions

9.3 × 5.4 × 3.7 inches

View on Amazon: Western Digital RE 4TB 7200 RPM Hard Drive Affiliate link

The Western Digital RE WD4000FYYZ is a 4TB 3.5-inch enterprise drive with 7200 RPM and SATA 6.0Gb/s interface. It offers 64MB cache and 171 MB/s sustained speeds. This drive suits users needing reliable 24/7 operation with a 1.2 million hour MTBF. It is a solid option for smaller storage arrays or specific nearline applications where high capacity is not the primary requirement.

Pros

• 7200 RPM rotational speed for consistent performance
• SATA 6.0Gb/s interface for reliable connectivity
• 64MB cache buffer for data handling
• 1.2 million hour MTBF for reliability
• Dual processor architecture for improved throughput

Cons

• 4TB capacity is much lower than 14TB-20TB competitors
• 64MB cache is smaller than 256MB standard in this class
• OEM model with limited 3-year reseller warranty

Good fit if

• You need a smaller capacity drive for specific slots
• You require high reliability for 24/7 nearline tasks
• You are building a mixed-capacity storage array

Skip if

• You need maximum storage density per drive
• You prefer larger 256MB cache for better buffering
• You want a standard manufacturer warranty over reseller terms

Verdict: WD RE 4TB 7200RPM SATA Drive fits users who prioritize reliability and speed over raw capacity. It is ideal for smaller enterprise setups or as a high-performance nearline component rather than a primary bulk storage solution.

4 Best premium

Seagate Exos X14 14TB Renewed Enterprise HDD

Best for: SATA users needing 14TB capacity

Storage Capacity

14TB

Form Factor

3.5-Inch

Hardware Interface

SATA 6Gb/s

Rotational Speed

7200RPM

Dimensions

5.8 × 4 × 1 inches

Weight

1.5 pounds

View on Amazon: Seagate Exos X14 14TB Renewed Enterprise HDD Affiliate link

This Seagate Exos X14 offers 14TB of storage on a 3.5-inch SATA 6Gb/s interface. It spins at 7200RPM for consistent performance. The drive is manufacturer recertified with zero hours of usage. It includes a one-year seller warranty. You will get reliable enterprise-grade capacity. It suits users needing high density without the cost of new drives. The SATA connection ensures broad compatibility.

Pros

• 14TB storage capacity
• 7200RPM rotational speed
• SATA 6Gb/s interface
• Manufacturer recertified condition

Cons

• Smaller capacity than the 20TB Exos X20
• SATA interface is slower than SAS
• Only 1-year seller warranty

Good fit if

• You need more than 14TB but less than 20TB
• You prefer SATA compatibility over SAS
• You want a recertified enterprise drive

Skip if

• You require SAS connectivity
• You need 20TB or more capacity
• You want a manufacturer-backed warranty

Verdict: Seagate Exos X14 14TB SATA HDD is a solid mid-tier option for those who need less space than the top pick but still want enterprise reliability. It fits users who prioritize SATA compatibility and verified condition over maximum capacity.

5 Also great

MFerraz 6TB Enterprise 7200 RPM Hard Drive

Best for: moderate capacity NAS setups

Storage Capacity

6TB

Form Factor

3.5-Inch

Hardware Interface

SATA 6Gb/s

Rotational Speed

7200 RPM

Cache Size

256MB

Dimensions

5.8 × 4 × 1 inches

View on Amazon: MFerraz 6TB Enterprise 7200 RPM Hard Drive Affiliate link

This MFerraz drive offers 6TB of storage with a 7200 RPM spindle speed and 256MB cache. It uses a SATA 6Gb/s interface for reliable data transfer. The 3.5-inch form factor fits standard drive bays. It is designed for enterprise-class reliability and 24/7 operation. This unit suits users needing moderate capacity for NAS or server environments without requiring the highest density available.

Pros

• 6TB storage capacity for business data and backups
• 7200 RPM rotational speed for responsive performance
• 256MB cache for efficient data transfers
• SATA 6Gb/s interface for broad compatibility

Cons

• 6TB capacity is smaller than 14TB or 20TB alternatives
• Renewed condition may vary in cosmetic appearance
• No warranty details provided in specifications

Good fit if

• You need a reliable 6TB drive for a single-bay NAS
• You prioritize rotational speed and cache size over maximum capacity
• You are building a budget-conscious RAID array

Skip if

• You require maximum storage density per drive
• You need SAS connectivity for high-end servers
• You prefer new drives with manufacturer warranties

Verdict: MFerraz 6TB 7200RPM SATA HDD provides solid performance for users who do not need high-capacity drives. It fits well in systems where 6TB is sufficient for your data needs.

6

MDD 14TB 7200RPM NAS Hard Drive

Best for: NAS systems needing 14TB capacity

Storage Capacity

14TB

Form Factor

3.5-inch

Hardware Interface

SATA 6.0Gb/s

Rotational Speed

7200 RPM

Cache Size

256MB

Dimensions

5.8 × 4 × 1 inches

View on Amazon: MDD 14TB 7200RPM NAS Hard Drive Affiliate link

The MDD 14TB drive offers high-density storage for NAS systems and data centers. It features a 7200 RPM rotational speed and 256MB cache for fast data access via SATA 6.0Gb/s. The 3.5-inch form factor fits space-constrained setups. This bare drive is suitable for desktop PCs, RAID systems, and surveillance applications, providing a solid option for users needing reliable enterprise-class performance.

Pros

• 14TB capacity for large data sets
• 7200 RPM rotational speed
• 256MB cache for improved performance
• SATA 6.0Gb/s interface

Cons

• Smaller 14TB capacity compared to the 20TB top pick
• SATA interface is slower than the SAS connection on the leader
• Sold as a bare drive without cables or screws

Good fit if

• You need a cost-effective 14TB option for a NAS build
• You require 7200 RPM performance for faster data access
• You are building a RAID system or surveillance setup

Skip if

• You need the maximum 20TB capacity available
• You require a SAS interface for enterprise server integration
• You prefer a drive that includes mounting hardware and cables

Verdict: The MDD 14TB 7200RPM SATA NAS Drive is a practical choice for users who need reliable enterprise-class performance in a 3.5-inch form factor without the premium price of larger capacities.

7 Best budget

Seagate Enterprise 4TB Internal Hard Drive

Best for: Small capacity NAS slots needing 7200RPM speed

Storage Capacity

4TB

Form Factor

3.5"

Hardware Interface

SATA 6Gbps

Rotational Speed

7200RPM

Cache Size

128 MB

Dimensions

5.87 × 4.01 × 1.03 inches

View on Amazon: Seagate Enterprise 4TB Internal Hard Drive Affiliate link

The Seagate ST4000NM0033 is a 4TB enterprise hard drive designed for 24/7 heavy-duty use. It features a 7200RPM rotational speed and a SATA 6Gbps interface. With only 128MB of cache, it differs from the 256MB options on this list. It fits well in standard 3.5-inch bays for NAS, RAID, or server setups where moderate capacity and reliable performance are priorities.

Pros

• 4TB storage capacity
• 7200RPM rotational speed
• SATA 6Gbps interface
• 128MB cache memory
• Enterprise-grade design

Cons

• Smaller 128MB cache compared to 256MB competitors
• Lower 4TB capacity than 14TB-20TB alternatives
• No mention of SAS support, only SATA

Good fit if

• You need a reliable 4TB drive for a specific slot
• You require 7200RPM performance for active workloads
• You are building a SATA-based NAS or server

Skip if

• You need maximum capacity per drive
• You require larger 256MB cache for faster buffering
• You need SAS connectivity for enterprise servers

Verdict: Seagate 4TB Enterprise HDD 128MB Cache is a compact, high-speed option for users who do not need large individual drive capacities. It serves well in systems where space is limited but rotational speed matters.

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