Let us say that some people say that it takes a long time to copy a 1500 GB file (such as a database file), how long does it take for professional systems, and how to calculate the speed of the hard disk?
> in revolutions per minute Number as the unit of rotation speed (minimum 4200rpm, then 5400, 7200, 1k and 15k-this does not apply to SSD or flash memory).
>Interface speed is the maximum that the disk electronic device can try to send data to the disk controller Fastness (These range from 100MBps for ATA to 150/300/600 Mbps for SATA, 2/4/8/16 Gbps for Fibre Channel and even PCIe speeds for flash-based storage such as FusionIO). The track time is the time it takes to start reading or writing a specific disk sector-the time range of the disk is 3-15ms, while the range of the SSD/flash disk is only a small part.
>Then we achieve what you expect Actual speed, you should pay attention to four speeds; sequential read (read very large data blocks), sequential write (same but write), random read (get data from the entire disk), and random write. These changes Large, but for spinning disks, you can expect sequential reads and writes from 25MBps to 150MBps, and random reads and writes from 3MBps to 50Mps. The order of SSDs is usually in the range of 200MBps, and for random operations it is usually slightly Less. FusionIO can easily reach 1GBps, but it is usually small and expensive.
As you can see, there is no real average. If you want suggestions on what product to buy, please do May reply to us multiple times-this should include budget, application type, data set size, user base, hardware/operating system, and anything else you think is useful.
As for your 1.5TB copy, if you Doing this to a 7200rpm SATA disk with USB 2 connection, you should get at least 30MBps-40MBps or so, a full 1.5TB may take more than 10 hours or so. If this is a typical professional DAS/SAN system, I expect it to be in the range of 100MBps Inside means it takes about 3 hours.
Hope this helps, oh, just to clarify, MB = megabytes, Mb is megabits.
How to measure disk speed? Does it read Mbit or Mbyte per second? What is today’s average, what is fast, and what is fast industry?
Let us say that some people say that it takes a long time to copy a 1500 GB file (such as a database file), how long does it take for professional systems, and how to calculate the speed of the hard disk?
The disk speed is usually in;
>The speed in revolutions per minute (the minimum is 4200rpm, then 5400, 7200, 1k and 15k-this does not apply to SSD or flash memory).
>Interface speed is the fastest speed at which disk electronics can try to send data to the disk controller (these range from ATA’s 100MBps to SATA’s 150/300/600 Mbps, Fibre Channel’s 2/4/8/16 Gbps or even PCIe speeds are used for flash-based storage, such as FusionIO).
>Seek time is to start reading or writing to a specific disk sector The time required for the zone-the time range of the disk is 3-15ms, while the range of the SSD/flash disk is only a small part.
>Then we reach the actual speed you expect, you should pay attention to the four speeds; sequential read Fetch (read very large data blocks), sequential write (same but write), random read (fetch data from the entire disk), and random write. These vary greatly, but for spinning disks, you can expect from Sequential read and write from 25MBps to 150MBps, and random read and write from 3MBps to 50Mps. The sequence of SSDs is usually in the range of 200MBps, which is usually slightly less for random operations. FusionIO can easily reach 1GBps, but it is usually very Small and expensive.
As you can see, there is no real average. If you want suggestions on what product to buy, please reply to us as much as possible-this should include budget, application Type, data set size, user group, hardware/operating system, and anything else you think is useful.
As for your 1.5TB copy, if you do this to a 7200rpm SATA disk connected to USB 2, you It should be at least 30MBps-40MBps or so, the full 1.5TB may take more than 10 hours or so. If this is a typical professional DAS/SAN system, I expect it to be in the range of 100MBps which means it will take about 3 hours.
Hope this helps, oh, just to clarify, MB = megabytes, Mb is megabits.