FILE TRANSFER – APPROXIMATE TIME

  • For transfer 1 GB amount of data if transfer rate is 100Mbps then it would completed within 1 Minutes and 30 seconds
  • For transfer 1 GB amount of data if transfer rate is 50Mbps then it would completed within 3 Minutes.

Visit http://www.thecloudcalculator.com/calculators/file-transfer.html

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How to know if a disk is an SSD or an HDD ?

Linux automatically detects SSD, and since kernel version 2.6.29, you may verify sda with:

cat /sys/block/sda/queue/rotational

You should get 1 for hard disks and 0 for a SSD.

http://unix.stackexchange.com/questions/65595/how-to-know-if-a-disk-is-an-ssd-or-an-hdd

Measuring Storage Performance – Oracle Database

Oracle Orion is a tool for predicting the performance of an Oracle database without having to install Oracle or create a database. Unlike other I/O calibration tools, Oracle Orion is expressly designed for simulating Oracle database I/O workloads using the same I/O software stack as Oracle.

Measuring Storage Performance For Oracle Systems

http://oraclue.com/2009/10/27/orion-oracle-io-calibration-tool-included-in-11g-r2/

Hard disk drive performance comparision

http://en.wikipedia.org/wiki/Hard_disk_drive_performance_characteristics

Device Type IOPS Interface Notes
7,200 rpm SATA drives HDD ~75-100 IOPS[2] SATA 3 Gbit/s
10,000 rpm SATA drives HDD ~125-150 IOPS[2] SATA 3 Gbit/s
10,000 rpm SAS drives HDD ~140 IOPS[2] SAS
15,000 rpm SAS drives HDD ~175-210 IOPS[2] SAS

 

Typical HDD figures
HDD
Spindle
[rpm]
Average
rotational
latency [ms]
4,200 7.14
5,400 5.56
7,200 4.17
10,000 3.00
15,000 2.00

http://en.wikipedia.org/wiki/Hard_disk_drive_performance_characteristics