Below are answers to frequently asked questions about the Seagate ST9500421AS hard drive, based on available technical information and user discussions.
Q: What is the Seagate ST9500421AS?
A: The Seagate ST9500421AS is a 500GB 2.5-inch internal hard disk drive designed for laptops and portable storage applications. It uses SATA 3.0 Gbps interface and operates at 7200 RPM.
Q: What is the form factor and capacity?
A: This drive has a 2.5-inch form factor and provides a total formatted capacity of 500GB (500,107,862,016 bytes). It is suitable for standard laptop bays and external enclosures.
Q: What is the spindle speed?
A: The spindle speed is 7200 RPM, offering faster read and write performance compared to 5400 RPM drives.
Q: What interface does it use?
A: It uses a SATA 3.0 Gbps (SATA II) interface, which is backward compatible with SATA 1.5 Gbps ports.
Q: What is the cache buffer size?
A: The drive features a 16MB cache buffer to improve data transfer efficiency.
Q: What is the average seek time?
A: The average seek time is 8.5 ms for read operations and 9.5 ms for write operations.
Q: What is the operating temperature range?
A: The drive operates reliably between 0°C and 60°C (32°F to 140°F) with a non-operating range of -40°C to 70°C.
Q: What is the shock tolerance?
A: The non-operating shock tolerance is 350 G for 2 ms, while operating shock tolerance is 100 G for 2 ms.
Q: Is it compatible with desktop computers?
A: Yes, it can be used in desktops with a 2.5-inch bay or a mounting adapter. Ensure the power supply provides enough power for the SATA connector.
Q: Does it support NCQ?
A: Yes, Native Command Queuing is supported for improved performance under multi-threaded workloads.
Q: What operating systems are supported?
A: The drive is compatible with Windows, macOS, Linux, and other operating systems that support SATA storage devices. No special drivers are needed.
Q: Can it be used as an external drive?
A: Yes, with a 2.5-inch SATA to USB enclosure or adapter, it functions as a portable external drive.
Q: What is the power consumption?
A: Average power consumption is approximately 2.0W during read/write and 0.8W during idle.
Q: Is it suitable for gaming or video editing?
A: While not as fast as modern SSDs, the 7200 RPM speed makes it acceptable for casual gaming and moderate video editing tasks.
Q: What should I do if the drive is not detected?
A: Verify the SATA cable and power connection. Try a different SATA port on the motherboard. Check BIOS settings to ensure the SATA port is enabled. Under Windows, use Disk Management to initialize and format the drive if necessary.
Q: How do I check the drive health?
A: Use S.M.A.R.T monitoring tools like CrystalDiskInfo or HD Tune. Look for attributes such as reallocated sectors, current pending sectors, and uncorrectable sector counts.