# SAS controller HP Enterprise P840 4GB 12G 2-Port internal (726897-B21-RFB)

**URL:** https://aio.lv/en/product--hp-enterprise-726897-b21-rfb--931273
**Data updated:** 2026-01-12 19:29 (EET)
**Category:** I/O Adapters & Controllers
**Manufacturer:** HP Enterprise
**Manufacturer code:** 726897-B21-RFB
**EAN:** 5706998232021
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 50.99 €
**Prices and availability valid until:** 2026-07-27 23:59
**Price without VAT (21%):** 42.14 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--hp-enterprise-726897-b21-rfb--931273

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 13.07.2026 | free |
| Pickup points | 16.07.2026 | 1.89 EUR |
| Courier delivery to door | 16.07.2026 | 4.99 EUR |

## Summary description

HP Enterprise SAS controller P840 is an internal 2-port RAID controller featuring 4GB cache and 12G SAS interface. Designed for servers and storage arrays, it provides hardware RAID management for improved data throughput and reliability. Suitable for database, virtualization and mixed workload environments where high I/O performance and redundancy are required.

## Long description

HP Enterprise SAS controller P840 4GB 12G 2-Port internal (726897-B21-RFB) is a hardware RAID controller for servers and storage arrays. It provides two internal SAS ports with a 12G SAS interface and a 4GB cache designed to improve data throughput and reliability. The controller is intended to manage RAID configurations in environments that require predictable I/O performance and redundancy for business applications such as databases and virtualization workloads.
Advantages
The HP Enterprise P840 offers hardware-level RAID management, offloading RAID computations from the host CPU to maintain application performance. With a 4GB cache, the controller helps smooth bursty I/O and reduce latency under mixed workloads. The 12G SAS interface supports high-speed links to compatible drives and storage backplanes, while the two internal ports enable straightforward cabling to internal drive enclosures. The card is supplied under the HP Enterprise brand and uses the referenced manufacturer part number (726897-B21-RFB).
Suitable for
 Database servers requiring consistent high I/O performance
 Virtualization hosts with mixed read/write workloads
 Storage arrays and internal server storage expansion
 Environments where hardware RAID and redundancy are required
Key specifications
 Brand: HP Enterprise
 Model / MPN: 726897-B21-RFB
 Interface: 12G SAS
 Cache: 4GB
 Ports: 2 internal SAS ports
 Form factor: internal RAID controller for servers and storage arrays
 Category: I/O adapters and controllers
 EAN: 5706998232021
How to use
Install the HP Enterprise P840 into a compatible server PCIe slot according to the server vendor instructions and secure internal SAS connections to the drive backplane or drive cage using appropriate cables or connectors. After physical installation, initialize the controller firmware and configure RAID levels using the HP management utilities or supported BIOS/UEFI console. Create arrays and logical volumes, set cache policies and write-back or write-through modes as required for your workload, and verify that the host operating system recognizes the logical drives.
Usage recommendations
Use current firmware and vendor-recommended drivers for optimal compatibility and stability. Match the controller with drives and backplanes that support 12G SAS to obtain full interface speed. Configure battery or capacitor-backed cache where supported for safe write caching if data integrity under power loss is a concern. Test RAID configurations and monitor performance under expected workloads before deploying into production.

## FAQ

### How much does the SAS controller HP Enterprise P840 4GB 12G 2-Port cost, and is it available for purchase?

The price is 50.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 2 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 13.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All HP Enterprise products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized HP Enterprise service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

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