IBM 1746A4E SCSI Enclosure Storage Expansion
If you need a large quantity of 1746A4E product - call us at +1 (718) 766 5269 or request a quote at live chat and our sales manager will contact you shortly.
Looking for assistance? Connect with one of our experts
We are accepting NET 30 days purchase orders & offer payment terms of up to 12 months. Get a decision in seconds, without affecting your credit.
2 of 2

1746A4E IBM 24 Bay System Storage Exp3524 Storage Expansion New

Availability: In Stock
Part Number#: 1746A4E
List Price was: $123.26
Your Price:
You Save: $70.26 (57% off)

3% Discount on Checkout

Short Description:
1746A4E IBM 24 Bay System Storage Exp3524 Storage Expansion Unit Model E4a Storage Enclosure | New Factory Sealed

Interface Types of This Product: Storage Expansion SCSI

Brand Warranty:
3 Years from the Manufacturer
Product Condition:
New Factory Sealed
Warranty provided by ALLHDD.COM:
90 Days
We are providing specifications below to explain why you should consider purchasing the IBM SCSI Storage Expansion Enclosure, including a general overview, performance specifications, relevant images, media files, and technical information about the 1746A4E compatibility.

Redundancy and High Availability Features

The IBM System Storage EXP3524 is a 24-bay storage expansion unit that provides both redundancy and high availability features to ensure data availability and minimize downtime in case of component failure.

Here are the redundancy and high availability features of the IBM 1746A4E System Storage EXP3524:

  • Dual Redundant Power Supplies: The EXP3524 has two power supplies, each with its own power cord, to provide redundant power to the system. If one power supply fails, the other will take over and provide power to the unit.
  • Hot-swappable Components: The storage enclosure is designed with hot-swappable components, such as hard disk drives and power supplies, which can be replaced without shutting down the entire system. This allows for maintenance or replacement of failed components without causing downtime for the system.
  • RAID Support: The EXP3524 supports RAID levels 0, 1, 5, 6, 10, 50, and 60, which provide data redundancy and protect against data loss due to drive failures. RAID can be configured to automatically rebuild data to a spare disk if a disk fails.
  • Dual-ported SAS Disks: The EXP3524 supports dual-ported SAS disks, which provide redundant data paths to the disks. This ensures data availability and eliminates the risk of data loss due to a single point of failure.
  • Battery Backup: The storage enclosure has a built-in battery backup unit that provides power to the cache memory in case of a power failure. This ensures that data in the cache memory is not lost during a power outage.
  • Dynamic Disk Pooling: The EXP3524 supports dynamic disk pooling, which allows administrators to create a virtual pool of disks that can be allocated to different RAID sets. This provides greater flexibility in allocating storage resources and helps to improve storage efficiency.

Performance Metrics and Benchmarking

Performance Metrics:

  • Capacity: The IBM 24 Bay System Storage Exp3524 Storage Expansion Unit Model E4a Storage Enclosure can support up to 24 hot-swappable drives, providing a total storage capacity of up to 72 TB.
  • Data Transfer Rate: The data transfer rate for the IBM 24 Bay System Storage Exp3524 Storage Expansion Unit Model E4a Storage Enclosure is up to 6 Gbps per drive, allowing for fast and efficient data transfer.
  • RAID Levels: The IBM 24 Bay System Storage Exp3524 Storage Expansion Unit Model E4a Storage Enclosure supports multiple RAID levels, including RAID 0, 1, 5, 6, and 10, providing users with a range of options for data protection and performance.
  • Hot-swappable Drives: The IBM 24 Bay System Storage Exp3524 Storage Expansion Unit Model E4a Storage Enclosure features hot-swappable drives, which means that drives can be replaced while the system is running without any downtime.


  • IOPS (Input/Output Operations Per Second): The IBM 24 Bay System Storage Exp3524 Storage Expansion Unit Model E4a Storage Enclosure can achieve up to 16,000 IOPS, which is a measure of the number of input/output operations that can be performed per second.
  • Latency: The IBM 24 Bay System Storage Exp3524 Storage Expansion Unit Model E4a Storage Enclosure has low latency, meaning that there is minimal delay between a request for data and the delivery of that data.
  • Throughput: The IBM 24 Bay System Storage Exp3524 Storage Expansion Unit Model E4a Storage Enclosure can achieve high throughput, which is a measure of the amount of data that can be transferred per unit of time.
  • Reliability: The IBM 24 Bay System Storage Exp3524 Storage Expansion Unit Model E4a Storage Enclosure is highly reliable, with features such as redundant power supplies and fans, hot-swappable drives, and advanced RAID options to protect against data loss.

Energy Efficiency and Environmental Considerations

The IBM 24 Bay System Storage Exp3524 Storage Expansion Unit Model E4a Storage Enclosure is designed with energy efficiency and environmental considerations in mind. This unit features a highly efficient power supply that minimizes power consumption, reducing the overall energy footprint of the system.

In addition, the enclosure is designed to be highly modular, allowing for easy upgrades and maintenance without the need to replace the entire unit. This reduces waste and helps to extend the lifespan of the system, further reducing its environmental impact.

The enclosure is also designed with noise reduction in mind, with carefully selected fan placement and acoustical materials used to minimize noise levels. This makes the unit ideal for use in quiet environments such as offices or data centers where noise pollution can be a concern.

General Specifications

  • ManufacturerIBM
  • Manufacturer Part #1746A4E
  • Device TypeStorage enclosure
  • Enclosure Type Rack-mountable - 2U
  • Installed Devices / Modules Qty0 (installed) / 24 (max)
  • Supported DrivesSerial Attached SCSI 2
  • Approximate Dimensions (WxDxH)17.7 in x 19.2 in x 3.5 in
  • Hard Drive0 hot-swap
  • PowerAC 120/230 V ( 50/60 Hz )
  • Power RedundancyYes
  • Manufacturer Selling ProgramIBM Express Seller

Storage Expansion

It's an easier process to connect the external hard drives just as the USB. The problem arises when networking platforms and devices require extraordinary storage speeds to reduce loading times. Microsoft and Seagate watched all these problems with great detail and came up with the solution; the storage expansion or some might call it storage array.

Thus, this custom-engineered solution can add more than 1TB of data storage or SSD storage to your console-setup. Not only will it be increasing the storage capacity, but the load speeds will be improved much.

IBM Storage Arrays - A Seamless and Virtual Storage Solution:

IBM has brought you the storage arrays, which serve as a brilliant and convenient solution to flash storage problems. These flash system arrays or the IBM flash system are cost-effective in providing the hybrid cloud-like technology but top-performing in the current category. Thanks to this IBM system storage, you can seamlessly control and manage the server rooms and IT business centers' data.

All in all, you can utilize your time in refining the hybrid cloud strategy for your servers. Thus, from the entry-level to the expert tech-savvies, storage expansion is the solution to all the data storage problems.

We, at ALLHDD, have got the range of IBM system storage devices in the following subcategories, i.e., 2U, EXP400, EXP5000, and Rack Mount.

Seagate Storage Expansion Card:

Seagate has launched the storage expansion cards in partnership with the Xbox to solve the storage problems in the Xbox Series S and Xbox Series X. Maintaining the speed and performance; this disk array or storage card can fulfill the dreams of having the next-generation console gaming.

The Seagate Expansion features the Xbox Velocity Architecture, which integrates up to 1TB of storage capacity to the system storage and ensures seamless gameplay. All in all, high performance and the same loading speeds can be achieved from the expansion slots and SSD storage. A quick resume option enables a seamless and easy way to switch between multiple titles.

ALLHDD has brought you an extended range of expansion cards and storage solutions apart from the IBM storwize, including Rack Mountable, SAS, and SCSI.

Why Buy From Allhdd?

ALLHDD brings you quality storage expansion cards and devices at a much better deal than the market. Our full range of products in this category will cover all your needs.


Please choose your location for calculate shipping cost.


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.

What is not covered by our warranty?

The reason why our warranty does not cover any problem caused by the following conditions:

(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.
Final Sale items are non-returnable/refundable in any situation. Any question? please ask our team before the shipment.

Important notes:

We can provide additional warranty service/support for any product you purchase from us if you need additional warranty coverage before finalizing the order from ALLHDD.Com. You need to ask in live chat/help or call us for more information.

Individual product warranty mentioned on each item product description page/detail page.

Free Technical support on purchased items, our expert consultancy over the phone, by email, by live chat, or by remote login.


Shipping Options and Estimated Delivery Time

UPS Shipping Options:

FREE UPS® Ground (Free shipping to all orders for 48 states!)
Estimated delivery time: 4-7 business days

UPS 3 Day Select®
Estimated delivery time: 3 business days

UPS 2nd Day Air®
Estimated delivery time: 1-2 business days, Delivery by 10:30 AM or 2:00 PM

UPS Next Day Air® Standard Overnight
Estimated delivery time: Overnight 2-5 PM, Standard Overnight Delivery.

UPS Next Day Air® - Priority Overnight
Estimated delivery time: Overnight Delivery (Next Business Day) Delivery by 10:30 AM or 12:00 PM

UPS Next Day Air® First Overnight - Early A.M
Estimated delivery time: Overnight 8:00 AM, Early morning, overnight delivery for your time-critical shipments.

UPS® First Overnight - Saturday
Estimated delivery time: Overnight 8:30 AM – Saturday

FedEx Shipping Options:

FedEx Ground®
Estimated delivery time: (4–7 business days in the contiguous 48 states)
*For residential delivery via FedEx Ground use FedEx Home Delivery®
Estimated delivery time: 4−7 business days, based on the distance to the destination.

FedEx Express Saver®
Estimated delivery time: 3 business days (by 4:30 PM to U.S. businesses; by 8:00 PM to residences)
Available throughout all 50 states (except Hawaii and Alaska)

FedEx 2Day®
Estimated delivery time: 2 business days (by 4:30 PM to U.S. businesses; by 8:00 PM to residences)
Available throughout all 50 states

FedEx Standard Overnight®
Estimated delivery time: Next-business-day (by 4:30 PM to U.S. businesses and by 8:00 PM to residences)
Available throughout all 50 states (Hawaii is outbound only)

FedEx Priority Overnight®
Estimated delivery time: Next-business-day (by 10:30 PM to U.S. businesses, noon to most residences)
Available throughout all 50 states

FedEx First Overnight®
Estimated delivery time: Next-business-day (by 8:30 or 9 AM to most areas)
Available throughout all 50 states

Worldwide Shipping Options:

UPS®/FedEx® International Economy

Estimated delivery time: 4-7 business days

UPS®/FedEx® International Priority

Estimated delivery time: 2-4 business days

UPS®/FedEx® Ground Shipping Canada

Estimated delivery time: 5-8 business days

Important notes:

  • The processing of orders with Ground Shipping can take up to 24-48 hours. But we try to process all orders the same day.
  • We are not responsible for weather problems that may affect the delivery of goods by carriers. We cannot guarantee the exact delivery time, regardless of the carriers' claims.
  • If you have any specific delivery time requirements, please contact our customer support and someone from our customer service team will be able to help you.
  • You can estimate the shipping cost from the products detail page, also available on the checkout page
  • The shipping cost depends on box dimensions, weight, and zip/postal code
  • To get a FedEx® delivery service you need to mention it on the checkout page notebox.
  • For urgent shipments, please contact our customer service.
  • Shipping cut off 4:00 PM (Monday-Friday) and available blind drop shipment.