The HC490 is a hard disk drive (HDD) made by Dell with a capacity of 300GB. I'm not able to find any information on the spindle speed of this HDD, but in general, a higher spindle speed will generally result in faster data access speeds.
In terms of performance, it is difficult to say how fast the HC490 HDD is without knowing its spindle speed. However, in general, 300GB HDDs are considered to be mid-range in terms of capacity, and are typically used in desktop computers, laptops, and other general-purpose computing systems. They are capable of delivering decent data access speeds and relatively low latency, and are a good choice for those who need a mid-range HDD for their computing needs. If you are looking for a high-performance HDD, you may want to consider an HDD with a higher capacity and/or a faster spindle speed.
A 3.5-inch hard disk drive (HDD) is a type of HDD that is physically 3.5 inches in diameter. This size is larger than other common HDD sizes, such as 2.5 inches and 1.8 inches, and is typically used in desktop computers and other larger computing systems. 3.5-inch HDDs are generally more capacious and have faster spindle speeds than smaller HDDs, which makes them a good choice for those who need a lot of storage space and/or high performance.
3.5-inch HDDs are typically installed in a hard drive bay in the computer's case, and are connected to the motherboard using a data cable, such as a SATA or PATA cable. They are usually powered using a separate power cable. Some 3.5-inch HDDs are designed to be used in servers and other high-performance computing systems, while others are designed for use in general-purpose computing systems. There are also external 3.5-inch HDDs that can be connected to a computer using a USB or other type of interface.
Internal Hard Disk
General Information of Dell HC490
- Manufacturer: Dell
- MPN : HC490
- Type: Hard Disk Drive(HDD)
Technical Features for 300GB Hard Disk Drive
- External Data Transfer Rate: 320 MBps
- Capacity: 300GB
- Interface : SCSI
- Enclosure: Internal
- HDD Form Factor: 3.5inch x 1/3H (Low Profile)
- Spindle Speed: 10K RPM
- Seek Time: 4.5 ms
- Average Latency: 3 ms
- Interface (Detailed): SCSI
- Hot Swap: Yes
Dimension and Weight of 3.5Inch Hard Drive
- Width : 4 Inch
- Depth : 5.8 Inch
- Height : 1 Inch
- Weight : 1.52 Lbs
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.
About Refurbished Products
The ultra320 SCSI hard drive generation is the immediate upgrade of its predecessor, the ultra160 SCSI. The newer generation ultra320 SCSI HDD comes about as an implementation of the SCSI-3 Parallel Interface-4 (SPI-4) standards.
Over its lifetime, the SCSI standard is widely used in servers and high-end workstations. It is possible to install SCSI HDDs in a desktop PC that has one or more IDE disk drives. The IDE drive acts as the boot drive, while the SCSI hard drive provides additional storage capacity. SCSI is not commonly used in desktop PCs, although it allows the addition of a scanner and several other drives such as DVD-RAM, CD-Rs, and Zip drives to a single SCSI cable chain. USB and FireWire have gradually replaced the SCSI as alternate interfaces in the latest desktop PCs.
In-network servers, SCSI allows for the setting up of several hard drives in the RAID configuration to reduce the risk of loss of data. The configuration supports hot-swapping - the changing of hard drives while the system is still operating.
Ultra320 SCSI HDD just as the name suggests delivers 320 Mbps top speed and provides a faster bus at 80 MHz and a wider data path at 16 bit. Connections with the Ultra320 SCSI HDDs just like with SCSI devices can be daisy-chained since they have two ports - the incoming and the outgoing cables. Besides, SCSI has a strong commitment to backward compatibility to previous generations, which explains its widespread use as an I/O interface and elimination of the need for substantial investments in equipment and infrastructure. Migration to the ultra320 SCSI HDD is smooth whether it is from the Ultra160 SCSI or other generations of the SCSI standard because of backward compatibility.
The ultra320 SCSI hard drive takes on technologies such as domain validation, cyclic redundancy check, and dual-edge clocking first introduced by ultra160 SCSI. Additionally, the ultra320 SCSI hard drive introduces protocol changes and other technologies that enhance performance and support reliable data transfer speeds at 320 Mbps. We have the following ultra320 SCSI HDD options: 146GB-10K RPM, 146GB-15K RPM, 300GB-10K RPM, 300GB-15K RPM, 36GB-10K RPM, 36GB-15K RPM, 73GB-10K RPM, 73GB-15K RPM, and 18GB-15K RPM to meet your performance and storage requirements.
The standard features of the ultra320 SCSI hard drive include:
- Two-fold increase in transfer speed: The ultra320 SCSI hard drive increases the transfer rate by 100% from the previous generation at the rate of 320 Mbps. The technology allows greater transfer rates, effectively leading to greater performance in environments of extended data transfer and support for many devices on a single bus.
- Support for SCSI packet protocol: By enabling packet protocols, the ultra320 SCSI HDD helps to reduce command overhead by using dual transition (DT) data phases to transfer data, commands, and statuses rather than asynchronous phases that are generally slow. Packet protocol allows for the transfer of multiple commands in one connection as well as increased performance through minimal command overhead and maximum bus utilization.
- Quick Arbitration and Selection (QAS): the technology helps reduce control release overhead between devices at the SCSI bus. QAS is all about reducing command overhead and maximizing utilization of the bus.
- Read/Write Data Streaming facilitates the reduction of overhead associated with data transfer through the sending of a LUN Q-TAG (LQ) data stream packet, which is subsequently followed by multiple data packets. Greater write data streaming is achieved since the bus turnaround delay is eliminated between LQ and data packets.
- The flow control feature facilitates the initiator to enhance the pre-fetching of data for writes and enhance the flushing of FIFOs for reads.
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