HP 633539-001 Smart Array P421 is a RAID controller that provides advanced RAID performance and reliability. This device has two external SAS ports, making it ideal for connecting to external storage devices. This article explains what a RAID controller is, how it works, and the features of the HP 633539-001 Smart Array P421.
The RAID ControllerA RAID controller is a hardware device that manages a redundant array of independent disks (RAID). RAID is a data storage technology that combines multiple hard drives into a single logical unit to improve performance, reliability, and data protection. RAID can be implemented in software or hardware. A hardware RAID controller is a dedicated device that manages RAID independently of the host computer's operating system.
The RAID Controller working ProcessA RAID controller manages data storage by dividing data into blocks and distributing them across multiple hard drives. The controller uses various RAID levels to optimize data storage and improve performance. RAID levels include RAID 0, RAID 1, RAID 5, RAID 6, and RAID 10. RAID 0 stripes data across multiple disks to improve performance, while RAID 1 mirrors data across two disks to provide redundancy. RAID 5 stripes data across multiple disks and includes parity information to provide data protection against disk failures. RAID 6 is similar to RAID 5 but can tolerate up to two disk failures. RAID 10 combines RAID 0 and RAID 1 to provide both performance and redundancy.
Features of the HP 633539-001 Smart Array P421The HP 633539-001 Smart Array P421 is a hardware RAID controller that supports SAS and SATA hard drives. It has two external SAS ports and one internal SAS port, allowing it to connect to up to 226 drives. The controller supports RAID levels 0, 1, 10, 5, and 50. It has a cache size of 2GB and supports battery-backed write cache (BBWC) for data protection. The controller also supports online RAID level migration, which allows you to change the RAID level without losing data.
CompatibilityThe HP 633539-001 Smart Array P421 is compatible with a wide range of HP servers, including HP ProLiant DL and ML servers. It requires a PCI Express 3.0 x8 slot and supports Windows, Linux, and VMware operating systems. Before purchasing the controller, it is important to check the server's compatibility and ensure that it meets the necessary requirements.
Advantages of using a RAID ControllerRAID controllers provide several advantages, including improved performance, data protection, and reliability. By combining multiple hard drives into a single logical unit, RAID controllers can improve read and write speeds, which is particularly useful for applications that require fast data access. RAID also provides data protection against disk failures. If one disk fails, data can be reconstructed from the remaining disks, ensuring that data is not lost. RAID controllers can also improve reliability by allowing hot-swapping of failed disks, which minimizes downtime and ensures that the system is always available.
Summary, the HP 633539-001 Smart Array P421 is a hardware RAID controller that provides advanced RAID performance and reliability. It supports SAS and SATA hard drives, has two external SAS ports, and supports RAID levels 0, 1, 10, 5, and 50. The controller has a cache size of 2GB and supports battery-backed write cache (BBWC) for data protection. By using a RAID controller, you can improve performance, data protection, and reliability, making it a valuable addition to any server.
- Brand: HP
- Part Number or SKU# 633539-001
- Type: Controller
- Sub-Type: SAS Controller
- Host Interface: PCI Express 3.0
- RAID Supported: Yes
- RAID Levels: 0,1 ADM,1,1+0,5,50,6,60
- Data Backup Type: Flash Backed Cache
- Total Number of SAS Ports: 2
- Number of SAS Ports (Internal): 2
- Number of SAS Ports (External): 2
- Form Factor: Plug-in Card
- Platform Supported: PC
Contact us or ask for live chat/help if you have any questions about the compatibility of this item to ensure the model's matching features with your current system.
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