Description
Product Overview of the Dell DU494
The Dell DU494 Perc 5/e is a dual-channel 8-port SAS controller that is designed to work with PCI-express interfaces. It is a hardware component that provides a high level of data reliability and performance, making it ideal for enterprise-level applications.
What is a SAS controller
A SAS controller is a device that enables communication between the host computer and SAS (Serial Attached SCSI) devices such as hard drives, tape drives, and solid-state drives. It serves as an interface between the computer’s bus and the SAS devices, ensuring that data is transmitted accurately and efficiently.
What is PCI-express
PCI-express is a high-speed serial interface standard that is used to connect various components of a computer system, including SAS controllers, graphics cards, network adapters, and storage devices. It offers faster data transfer rates than older interfaces such as PCI and AGP, making it a popular choice for high-performance computing applications.
Dual Channel 8port SAS controller
The Dell DU494 Perc 5/e SAS controller is a dual-channel device, which means that it can support up to two SAS channels for increased data throughput. Each channel supports up to four SAS devices, giving a total of eight ports for connecting SAS drives. This makes it an ideal solution for systems that require a large number of drives, such as storage arrays and servers.
256MB Cache: The Dell DU494 Perc 5/e SAS controller comes with a 256MB cache, which is used to improve data transfer speeds and reduce latency. The cache stores frequently accessed data in memory, allowing the controller to retrieve it more quickly than if it had to access the data directly from the disk. This can lead to significant performance improvements in systems with heavy disk I/O loads.
RAID Support
The Dell DU494 Perc 5/e SAS controller supports RAID (Redundant Array of Independent Disks) configurations, which are used to provide fault tolerance and improve system reliability. RAID can be used to create a mirrored disk set, where data is written to two or more disks simultaneously, providing redundancy in case of disk failure. Alternatively, RAID can be used to create a striped disk set, where data is split across multiple disks to improve performance.
Compatibility
The Dell DU494 Perc 5/e SAS controller is compatible with a wide range of operating systems, including Windows, Linux, and VMware ESX. It is also compatible with a variety of Dell PowerEdge servers, making it an easy upgrade option for existing systems.
In summary, the Dell DU494 Perc 5/e SAS controller is a high-performance hardware component that provides a reliable and efficient interface between SAS devices and the host computer. Its dual-channel design and support for up to eight SAS drives make it an ideal solution for systems that require a large amount of storage. Additionally, its 256MB cache and support for RAID configurations make it a valuable tool for improving system performance and reliability
General Information about the Dell DU494
- Manufacturer: Dell
- Part Number or SKU# DU494
- Product Type: Controller
- Product Name: SAS-SATA
Technical Information
- Device Type : Storage Controller
- From Factor : Plug In Card
- Interface Support : 3gb/s Sas
- Pci Support : Pci-e 1.0
- Cache Memory : 256mb
- Raid Levels : 0,1,5,10,50
- Raid Support : Hardware Raid
Expansion / Connectivity
- Sas Connections : 2×4 External
- Compatible Slots : 1 X Pci Express
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