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

Exadata

http://education.oracle.com/simulator/OracleDatabaseMachine_ExadataOverview/index.htm

https://www.linkedin.com/pulse/upgrade-youself-dba-dma-syed-jaffar-hussain

SAN Storage Monitoring

OpStor is a multi-vendor storage area networks SAN and network attached storage NAS monitoring tool for storage devices.

http://www.manageengine.com/products/opstor/

• Heterogeneous storage Infrastructure management solution
• Multi-Vendor Storage Management

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/

Benchmarking Oracle I/O Performance with Orion by Alex Gorbachev from Alex Gorbachev

Fiber-Optic Cabling vs. Copper Cabling

http://www.thefoa.org/tech/fo-or-cu.htm

Distance	Bandwidth	Voice Channels
Copper	2.5 km	1.5 Mb/s	24
Fiber	200 KM	2.5+ Gb/s	32,000 +

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