Below are answers to frequently asked questions about the Seagate ST3500641SV hard drive, based on available technical information and user discussions.
Q: What are the key specifications of the ST3500641SV?
A: It is a 500 GB, 7200 RPM, 16 MB cache, SATA 3.0 Gb/s 3.5-inch drive from Seagate’s SV35 Series, designed specifically for surveillance DVR systems.
Q: What makes this drive different from standard desktop drives?
A: It is optimized for 24/7 surveillance workloads with a seek profile tuned for streaming video, limited spin-up current (2.0 amps max), and support for the Streaming feature set to prioritize timely data delivery.
Q: What is the real-world performance of this drive?
A: It delivers sequential read and write speeds around 40-65 MB/s, which is adequate for continuous video recording but modest by modern standards.
Q: Is this drive suitable for a desktop PC or gaming?
A: Not ideally. While it can function as a storage drive, its firmware is tuned for sequential streaming rather than random access, making it less responsive than standard desktop drives for gaming or OS use.
Q: Can I use it in a NAS or RAID array?
A: It is not recommended. Unlike enterprise NAS drives, it lacks advanced error recovery control and may drop out of RAID arrays during error handling.
Q: What are common failure signs?
A: Common signs include slow write speeds, bad sectors, S.M.A.R.T. warnings (especially reallocated sector count), clicking noises, or the drive failing to spin up properly.
Q: Is it CMR or SMR?
A: It uses CMR (Conventional Magnetic Recording), ensuring consistent write performance without the slowdowns seen in SMR drives.
Q: What should I check before buying a used unit?
A: Run a full S.M.A.R.T. diagnostic (check power-on hours, reallocated sectors, and pending sectors), listen for unusual noises during spin-up, and perform a surface scan to verify data integrity and the drive’s ability to sustain writes.
Q: Is it worth buying today?
A: Only for retro surveillance system repairs or very niche projects requiring a period-correct DVR drive. For modern use, a larger capacity surveillance-rated drive (like the SV7 or SkyHawk series) or a standard desktop drive offers better value and reliability.