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Data transfer at 0.3 MB/s between internal HDD and SSD
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<blockquote data-quote="Zoleee2000" data-source="post: 739363" data-attributes="member: 110214"><p>Suddenly the transfer rate dropped to 200-300 kb/s. I have no idea why .</p><p>Any help is appreciated.</p><p>Thank you!</p><p>I uploaded all the relevant screenshots, here is a summary:</p><p></p><p>My system is :</p><p>Intel Core i7 4771 @ 3.50GHz</p><p><a href="https://www.emag.ro/hdd-wd-purple-2tb-5400rpm-64mb-cache-sata-iii-wd20purx/pd/DNP9CBBBM/#" target="_blank">HDD WD Purple 2TB, 5400rpm, 64MB cache, SATA III</a></p><p>Windows 10 Pro 64-bit.</p><p></p><p>I have this PC with Win10 installed on the <a href="https://www.emag.ro/hdd-wd-purple-2tb-5400rpm-64mb-cache-sata-iii-wd20purx/pd/DNP9CBBBM/#" target="_blank">HDD WD</a> for a few years now, and it worked well.</p><p>About a year ago I bought a Samsung SSD 860 EVO 500GB , I installed Win 10 on this drive and since then I am using this SSD as the C drive and the HDD as storage for audio and video files.</p><p>The SSD works very well with the system ,and for a while transfer of any kind o files between the 2 drives was very fast.</p><p>Recently I tried to transfer some files from the HDD to the SSD and I was shocked to see that the transfer speed was an average 300 KB/s.</p><p>The transfer speed is similarly slow in both directions.</p><p>It does not matter how large or small the file is or how many files are copied , the speed is the same.</p><p>Sometimes (rarely)the speed just jumps up to 5-10 MB/s for a few seconds, and then it falls back .</p><p>I am using TerraCopy for file transfer.</p><p>I did a full antivirus scan , a boot scan etc.No viruses.</p><p>I tried to disable the antivirus during transfers. No change.</p><p>I defragmented the drive. No change.</p><p>I did a disk check.No bad sectors or errors have been found.</p><p>SSD is on slot 0, HDD is on slot1. To be sure I have tried with 2 other SATA cables to connect the HDD to 2 other SATA3 slots. No results.</p><p>I looked into Resource Monitor I did not notice anything suspicious.[ATTACH]39171[/ATTACH][ATTACH=full]39171[/ATTACH][ATTACH=full]39172[/ATTACH][ATTACH=full]39173[/ATTACH][ATTACH=full]39174[/ATTACH][ATTACH=full]39175[/ATTACH][ATTACH=full]39176[/ATTACH]</p></blockquote><p></p>
[QUOTE="Zoleee2000, post: 739363, member: 110214"] Suddenly the transfer rate dropped to 200-300 kb/s. I have no idea why . Any help is appreciated. Thank you! I uploaded all the relevant screenshots, here is a summary: My system is : Intel Core i7 4771 @ 3.50GHz [URL='https://www.emag.ro/hdd-wd-purple-2tb-5400rpm-64mb-cache-sata-iii-wd20purx/pd/DNP9CBBBM/#']HDD WD Purple 2TB, 5400rpm, 64MB cache, SATA III[/URL] Windows 10 Pro 64-bit. I have this PC with Win10 installed on the [URL='https://www.emag.ro/hdd-wd-purple-2tb-5400rpm-64mb-cache-sata-iii-wd20purx/pd/DNP9CBBBM/#']HDD WD[/URL] for a few years now, and it worked well. About a year ago I bought a Samsung SSD 860 EVO 500GB , I installed Win 10 on this drive and since then I am using this SSD as the C drive and the HDD as storage for audio and video files. The SSD works very well with the system ,and for a while transfer of any kind o files between the 2 drives was very fast. Recently I tried to transfer some files from the HDD to the SSD and I was shocked to see that the transfer speed was an average 300 KB/s. The transfer speed is similarly slow in both directions. It does not matter how large or small the file is or how many files are copied , the speed is the same. Sometimes (rarely)the speed just jumps up to 5-10 MB/s for a few seconds, and then it falls back . I am using TerraCopy for file transfer. I did a full antivirus scan , a boot scan etc.No viruses. I tried to disable the antivirus during transfers. No change. I defragmented the drive. No change. I did a disk check.No bad sectors or errors have been found. SSD is on slot 0, HDD is on slot1. To be sure I have tried with 2 other SATA cables to connect the HDD to 2 other SATA3 slots. No results. I looked into Resource Monitor I did not notice anything suspicious.[ATTACH alt="31-May-20 08-54-03 PM.jpg"]39171[/ATTACH][ATTACH type="full" alt="31-May-20 08-54-03 PM.jpg"]39171[/ATTACH][ATTACH type="full" alt="31-May-20 08-54-23 PM.jpg"]39172[/ATTACH][ATTACH type="full" alt="31-May-20 09-49-27 PM.png"]39173[/ATTACH][ATTACH type="full" alt="Performance Benchmark_20200531.png"]39174[/ATTACH][ATTACH type="full"]39175[/ATTACH][ATTACH type="full"]39176[/ATTACH] [/QUOTE]
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