HP 335921-B21 Storage Works Enclosure
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Why 335921-B21 HP Storage Hot Swappable Refurbished is the best?

Availability: In Stock
Part Number#: 335921-B21
List Price was: $263.04
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Short Description:
335921-B21 Storage 12 X 3.5 inch 1/3h Ultra320 Serial-Attached SCSI (SAS) Low Voltage Differential (LVD) Hot Swappable Compatible for Storage Works Msa20 Enclosure | Made by HP | Refurbished

Interface Types of This Product: Storage Works

Product Condition:
Warranty provided by ALLHDD.COM:
30 Days
We are giving specifications below, why one should consider procuring HP Storage Works Enclosure features, a general overview, description, performance specification, relevant images, a competitive price infographic, and technical information about the 335921-B21 model with compatibility.

Performance and scalability

Performance and scalability are important factors to consider when evaluating storage solutions, such as the HP Storage Hot Swappable Compatible (335921-B21).

In terms of performance, the storage solution should be able to handle the demands of the workload and provide fast data access speeds. This can be achieved through the use of high-performance storage technologies, such as solid state drives (SSDs) and NVMe drives. These drives are designed to provide faster data access speeds and lower latency than traditional spinning hard drives.

Scalability is another important factor to consider when evaluating storage solutions. Scalability refers to the ability of the solution to grow and adapt to changing storage needs. This can be achieved through the use of modular designs that allow for the easy addition of new storage components, such as drives and expansion units.

The HP Storage Hot Swappable Compatible (335921-B21) allows for easy scalability, by allowing to add more storage capacity as needed, and also by allowing to replace existing storage components with newer, higher-capacity components, without interrupting the operation of the system. This can be done through the use of hot-swap capability, which allows for the replacement of storage components without shutting down the system.

Hot-swappable capabilities and benefits

Hot-swappable capabilities refer to the ability to replace or add storage components, such as hard drives or solid state drives, without having to shut down the system or disrupt its operation. This feature is particularly useful in enterprise environments where uptime and availability are critical.

The HP Storage Hot Swappable Compatible (335921-B21) supports hot-swapping, which allows for the replacement of storage components without shutting down the system. This means that if a drive fails, it can be replaced without having to shut down the system, thus minimizing downtime and maximizing availability.

The benefits of hot-swappable capabilities include:

  • High availability: Hot-swapping allows for the replacement of failed components without having to shut down the system, which helps to maximize uptime and availability.
  • Easy maintenance: With hot-swappable capabilities, maintenance can be performed on the system without having to shut it down, which can save time and resources.
  • Increased scalability: Hot-swapping allows for the easy addition of new storage components, which can help to increase the capacity and performance of the system.
  • Improved data protection: The ability to hot-swap failed drives allows for the replacement of failed drives with new ones quickly, which can help to protect data from being lost.
  • Cost savings: Hot-swapping can help to reduce the costs associated with downtime and maintenance.

It is important to note that in order to take advantage of the hot-swapping capabilities, the system and the components should be designed specifically to support hot-swapping, and also to consult the manual provided with the product, as it may have specific instructions that should be followed during the hot-swapping process.

Data protection and reliability

Data protection and reliability are important features of the HP Storage Hot Swappable Compatible (335921-B21). The hot-swappable capabilities of this product allow for the easy replacement of failed drives, which can help to protect data from being lost. This is particularly important in enterprise environments where data integrity and availability are critical.

Additionally, the HP Storage Hot Swappable Compatible (335921-B21) is designed to be reliable and durable. It is constructed with high-quality materials and built to withstand the rigors of continuous use in an enterprise environment. This can help to ensure that the system will continue to function properly, even under heavy workloads.

To further enhance data protection and reliability, the HP Storage Hot Swappable Compatible (335921-B21) can be used in conjunction with RAID (redundant array of independent disks) technology. RAID allows for the creation of multiple copies of data across multiple drives, which can help to protect data in the event of a drive failure.

It is also recommended to check the user manual and the technical specifications of the product to ensure that it meets the requirements and standards of your organization in terms of data protection and reliability.

General Informtion

  • MPN : 335921-B21
  • Manufacturer : HP
  • SKU : 335921-B21

Expansion / Connectivity

  • Expansion Bays Total (Free) : 12 ( 12 ) X Hot-swap - 3.5 X 1/3h
  • Interfaces : 1 X Ultra320 Scsi Lvd - 68 Pin Vhdci (Mini-Centronics)


  • Power Device : 2 X Power Supply - Hot-plug - Plug-in Module
  • Max Supported Qty : 2
  • Power Redundancy : Yes
  • Power Redundancy Scheme : 1+1
  • Voltage Required : Ac 120/230 V (50/60 HZ)

Dimensions & Weight

  • width : 19.3 In
  • depth : 23.5 In
  • height: 3.5 In
  • weight: 55 Lbs

About Refurbished Products

Refurbished products are typically refurbished by an Original Manufacturer or an affiliate of the manufacturer or 3rd party facility. This product may have minor blemishes due to normal product usage and doesn't necessarily come with documentation and software unless indicated, but has been well tested and generally has never had any defects.


StorageWorks deliver the utmost benefits to the tech-savvies looking for scalability, performance, and relief from storage problems. Thus, defined as the industry's leading technology right now, the smart array modules are getting fame for their better price-performance and SAN environments.

You can maximize the transfer rates, reduce the maintenance and management costs, and receive rapid returns on the investments, thus, building a larger network is no more an issue now!

In short, the StorageWorks smart array is the reliable and innovative array technology to offer better data redundancy and storage solution.

Reliable and Efficient Smart Array Technology:

Tech-savvies and industrialists believe in the smart array technology, which features an additional configuration and offers flexibility even on the low investments. Moreover, reliability is not the only reason to keep your hands on the StorageWorks, but the high response rate includes! The smart array storage module is designed based on lower cost, ease of usage, and a high integration level.

Easy and Simplified Management:

StorageWorks is designed to ease the management process and maintenance. The module offers a consistent configuration, higher load speed, and minimizes the re-training. Thus, the universal disk drives can be replaced with the MSA 500 or MSA 1000 to reduce the operational and installation cost.

Why Buy From ALLHDD?

ALLHDD is offering the best solution to redundant problems by featuring the smart array modules. The StorageWorks smart array devices are available in the following subcategories with free ground shipping for 48 states of the USA. Check out our 2U, 4U, 5U, Fibre Channel, Rack Mount, and SAS categories, or use the search to find the best item that will suit 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.