Dell 21CT4 3.84TB Solid State Drive
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21CT4 Dell 3.84TB SAS 12GBPS Read Intensive MLC 2.5inch Hot New

Availability: In Stock
Part Number#: 21CT4
List Price was: $3115.38
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New Sealed

Short Description:
21CT4 3.84TB Serial-Attached SCSI (SAS) 12GBPS Read Intensive Multi Level Cell (MLC) 2.5inch Hot Plug Solid State Drive for Server | Made by Dell | Brand New 1 Year Server Supply Warranty
Product Condition:
New Sealed
Warranty provided by ALLHDD.COM:
1 Year

Maintenance and Troubleshooting

The Dell 21CT4 3.84TB SAS 12GBPS Read Intensive MLC 2.5inch Hot Plug SSD is a solid-state drive designed for read-intensive applications. It has a capacity of 3.84TB and uses the SAS 12GBPS interface for data transfer. The drive is also built with Multi-Level Cell (MLC) NAND flash memory, which is known for its good durability and reliability.

For maintenance, it is recommended to regularly check for firmware updates and to monitor the drive's SMART data to ensure it is operating within normal parameters. It's also important to do regular backups to protect the data.

In case of any issues, troubleshooting steps include checking the system's event logs, checking the drive's connection, and verifying that the correct drivers are installed. Additionally, it's important to ensure that the system and the controller are compatible with the Advanced Format 512e. If the problem persists, it may be necessary to replace the drive.

The drive is also built for hot-plugging, which means it can be replaced or inserted into a system while the system is running, but it's important to ensure that the system is configured for hot-plug operation before attempting to remove or insert the drive.

It's also important to check the system's operating temperature, humidity, and vibration levels are within the specified ranges to maintain the drive's performance and longevity.

SAS-12GBPS drives are typically used in enterprise-level storage systems and servers. They are typically more reliable, durable and faster than SATA drives, but they also tend to be more expensive.

If you encounter any issues with the drive, it's recommended to contact Dell technical support for further assistance.

Advantages of Solid State Drives

The Dell 21CT4 is a 3.84TB solid-state drive (SSD) that uses the SAS (Serial Attached SCSI) 12GB/s interface, MLC (Multi-Level Cell) flash technology and it is designed for read-intensive scenarios, where read operations are more frequent than write operations. It comes in 2.5 inch form factor and it is hot-pluggable.

Solid-state drives (SSDs) have several advantages over traditional hard disk drives (HDDs) which include:

  • Faster read and write speeds: SSDs use flash memory which allows for faster data access and higher input/output operations per second (IOPS) which is beneficial for high-performance applications.
  • Increased durability: SSDs have no moving parts, making them less prone to mechanical failure and more resistant to physical shock.
  • Lower power consumption: SSDs use less power than HDDs, which is beneficial for devices that run on batteries or have limited power supplies.
  • Quieter operation: SSDs do not have the mechanical moving parts of HDDs, which makes them quieter.
  • MLC technology provides a balance of cost and performance, it is more reliable and faster than TLC technology and it is suitable for read-intensive scenarios.
  • The hot-plug feature allows the drive to be removed and replaced without shutting down the system, making it an ideal solution for data centers, enterprise, and high-performance computing environments where uptime is crucial.

In summary, the Dell 21CT4 drive is well-suited for high-performance applications that require fast data access, increased durability, and lower power consumption. It is a cost-effective solution that is designed for read-intensive scenarios and for hot-plug scenarios.

Speed and Performance

The 21CT4 Dell 3.84TB SAS 12GBPS Read Intensive MLC 2.5inch Hot Plug SSD is a high-performance solid-state drive (SSD) with a large storage capacity of 3.84 terabytes. It utilizes SAS interface with a data transfer rate of 12 gigabytes per second, which is designed for read-intensive workloads. The SSD uses multi-level cell (MLC) NAND flash memory, which is a type of memory that can store multiple bits of data in a single memory cell. It is also designed with a hot-plug feature, which allows the drive to be replaced or upgraded without shutting down the system. This drive is likely to provide high performance and reliability for data-intensive workloads.

General Information

  • Manufacturer : Dell
  • MPN : 21CT4
  • Dell Part : 400-AMBV
  • SKU : 21CT4
  • Type : Solid State Drive (SSD)
  • SSD -Type : SAS-12GBPS

Technical Information

  • Capacity : 3.84TB TB
  • Nand Flash Memory Type: Multi-Level Cell (MLC)
  • Form Factor : 2.5inch
  • Features : Read-Intensive Endurance


  • Drive Transfer Rate : 1.2 GBPS (External)

Expansion / Connectivity

  • Interfaces : 1 X SAS 12 GB/S
  • Compatible Bays : 1 X Hot-Swap - 2.5

Dimensions & Weight

  • Height: 0.63 inch
  • Width: 3.10 inch
  • Depth: 5.45 inch
  • Weight: 1.50 lbs


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Product Condition:
New Sealed
Warranty provided by ALLHDD.COM:
1 Year


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ALLHDD guarantees that the products will not have defects in material that will affect the product's functionality during the Standard Warranty Period. The warranty period starts when the merchandise/items from our warehouse.

What does ALLHDD.Com warranty cover?

30-days to 3 years warranty:

Replacement or refund. In the case of material defects, we will try to replace the product first. The product will be replaced before the expiration of the original warranty. For any failure of hardware, if we cannot process the replacement of the product(s)/model(s), we will refund the original selling/invoiced price. The shipping costs and sales tax, if any, are non-refundable. ALLHDD retains the right to decide whether the item(s) will process for replacement or refund.

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(a) misuse of hardware; accidental damage; carelessness product(s) damage; shock; temperature beyond the specification of any product; faulty installation; operation; modification of goods;

(b) any misuse outside the instructions in the user manual for any specific product;

(c) damaged caused by other hardware or equipment. The warranty will void if the item is returned with physical damage, damage to the retail box, removed from the box, counterfeit labels/labelled by them, or any modifications of internal and external covers. Data loss or damages to any other equipment we do not cover by our offered warranty.

What is the Manufacturer/Brand Warranty?

In general, a manufacturer's warranty service/support is a written guarantee to the buyer of a product. Its terms assure the replacement or repair of the product, if necessary, within a specified period after the purchase (2-5 years depending on the brand/manufacturer). It is typically included in the price of the product. Products are brand new and sealed and the original manufacturer box is complete with the Manufacturer's genuine warranty. For most of the brand new/retail products that come with the manual and box, exceptions may apply (i.e., Cisco, Juniper Networks).

For the server parts (i.e., Dell, HPE) to get Full coverage of the warranty server must have a full 3- 5 years warranty. However, ALLHDD.COM will cover the warranty duration if any Manufacturer doesn't support the advertised warranty and there is no refund for those.
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