The HP 491191-B21 Smart Array P212 is a RAID controller card designed for use in servers and storage systems. This card is a low-profile PCI Express (PCI-E) x8 SAS controller with eight ports. It is capable of supporting both SAS and SATA hard drives and provides hardware RAID functionality. In this article, we will explore the features and benefits of the HP 491191-B21 Smart Array P212 RAID controller card.
PCI Express (PCI-E) X8 SASThe HP 491191-B21 Smart Array P212 RAID controller card uses the PCI-E x8 interface to connect to the server or storage system. PCI-E is a high-speed serial computer expansion bus standard that provides high data transfer rates between devices. The PCI-E x8 interface provides eight lanes of data transfer and can transfer up to 4 gigabytes per second (GB/s) in each direction.
SAS (Serial Attached SCSI)SAS is a serial communication protocol used to transfer data between computer components. SAS is commonly used in servers and storage systems because it provides high data transfer rates and supports multiple devices on a single bus. The HP 491191-B21 Smart Array P212 RAID controller card supports SAS data transfer rates of up to 6 gigabits per second (Gb/s) per port.
Hardware RAID FunctionalityThe HP 491191-B21 Smart Array P212 RAID controller card provides hardware RAID functionality. RAID (Redundant Array of Independent Disks) is a storage technology that uses multiple hard drives to provide increased performance, reliability, and data protection. RAID can be implemented in software or hardware. Hardware RAID is implemented on a separate controller card, such as the HP 491191-B21 Smart Array P212 RAID controller card.
The HP 491191-B21 Smart Array P212 RAID controller card supports several RAID levels, including RAID 0, 1, 10, 5, 50, 6, and 60. RAID 0 provides improved performance by striping data across multiple drives, but does not provide any data redundancy. RAID 1 provides data redundancy by mirroring data on two drives, but does not improve performance. RAID 10 combines striping and mirroring to provide both improved performance and data redundancy. RAID 5 and 50 provide data redundancy by using parity data, which is distributed across multiple drives. RAID 6 and 60 provide even greater data redundancy by using two sets of parity data.
Low Profile DesignThe HP 491191-B21 Smart Array P212 RAID controller card has a low profile design. This means that it is designed to fit in servers and storage systems with limited space. The low profile design allows the card to fit in systems with smaller form factors, such as blade servers or small form factor desktops.
Support for SAS and SATA Hard DrivesThe HP 491191-B21 Smart Array P212 RAID controller card supports both SAS and SATA hard drives. SAS and SATA are two different types of hard drive interfaces. SAS drives are commonly used in enterprise storage systems because they provide higher data transfer rates and are more reliable than SATA drives. SATA drives are commonly used in desktop and consumer storage systems because they are less expensive than SAS drives.
CompatibilityThe HP 491191-B21 Smart Array P212 RAID controller card is compatible with a wide range of servers and storage systems. It is compatible with HP ProLiant DL, ML, and SL servers, as well as HP StorageWorks Modular Smart Array (MSA) and HP StorageWorks Disk Enclosure (D2600) storage systems. The card is also compatible with several operating systems, including Microsoft Windows Server, Red Hat Enterprise Linux, and SUSE Linux Enterprise Server.
General Information about the HP 491191-B21- Manufacturer: HP
- Part Number or SKU# 491191-B21
- Type: Controller Card
- Interface: SAS Controller
- Device Type: Storage controller (RAID) - Plug-in Card - Low Profile
- Host Bus: PCIe 2.0 x8
- Interface: SATA 1.5Gb/s / SAS
- Data Transfer Rate: 300 MBps
- Buffer Size: 256 MB
- Supported Devices: Hard drive, disk array (RAID)
- RAID Level: RAID 0, RAID 1, RAID 5, RAID 10, RAID 50
- Interfaces: 1 x SATA 1.5Gb/s / SAS - 32 pin 4i MultiLane SAS (SFF-8484) (internal) 1 x SATA 1.5Gb/s / SAS - 26 pin 4x Shielded Mini MultiLane SAS (SFF-8088) (external)
- Compatible Slots: 1 x PCI Express x8
- HPE ProLiant Generation5 Generation6 Generation7 Servers
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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