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we have DELL machines with Seagate disks according to Seagate data transfer rate is 260 MBps speed - particularly for read or write

Understanding the 260 MBps Metric:

MBps stands for Megabytes per second. The 260 MBps value indicates how much data the drive can transfer per second. Specifically, it means that the Seagate drive can read or write 260 megabytes of data per second. This is a typical speed for modern Solid State Drives (SSDs) and can also be relevant to HDDs (Hard Disk Drives) in specific contexts, but SSDs tend to achieve faster transfer rates compared to HDDs.

So, let's get back to our disks. We feel that the disks are slow, so we want to check if they are really capable of 260 MBps. Is it possible to verify if the disks are truly achieving 260 MBps?

we try the following ( write to file )

dd if=/dev/zero of=/data/sdb/testfile bs=1M count=1024 oflag=dsync 1024+0 records in 1024+0 records out 1073741824 bytes (1.1 GB) copied, 1.6985 s, 632 MB/

but no make sense to get 632mbs when Seagate say 260mbs

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  • You're playing with cache. Use a tool made for measuring disk performance. Also note that drive speed is not the only relevant parameter; IOPS and latency is important as well. 260MB/s for a SSD is on the slow end; I'd expect ten times that. Ultimately it depends on your use case. A virtual database hosting environment needs different disks from a surveillance camera storage solution... Commented Mar 14 at 11:29
  • So, if we feel that reading or writing to the disks is slow, what is your suggestion to check that? Commented Mar 14 at 11:31
  • A tool made for the purpose of disk benchmarking. In general we don't do software recommendations on this site. Commented Mar 14 at 11:43

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