Secondary Storage
Lower Ground Fortune Mall, behind Maharashtra bank, Sitabuldi, Nagpur
9975288300
www.pskitservices.com
Jens Martensson 1
Content
Hard disk
History of Hard disk
Types of Hard disk
SATA Hard disk
USB / External Hard disk
SSD (solid State Drive) SSD
SCSI (Scuzzy)
What is Partitioning?
Formatting
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Secondary Storage
Secondary storage provides permanent or nonvolatile
storage. Using secondary storage devices such as a hard
disk, data and programs can be retained after the computer
has been shut off.
Hard-Disk
HDD is Non-volatile permanent storage device, Uses
magnetic media for storing data, and Hard disks save files
by altering the magnetic charges of the disk’s surface to
represent 1s and 0s. Hard disks retrieve data and programs
by reading these charges from the magnetic disk.
2. Hard disks use rigid metallic platters that are stacked one
on top of another.
3. Hard disk store and organize files using tracks, sectors
and cylinders.
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History of Hard disk
The first hard disk drives were small in capacity, physically large, and
expensive when compared to the cost of drives today.
They were about 4 inches tall, 5.25 inches wide, and 8 inches long, and
they weighed almost 10 pounds.
In 1981, IBM introduced the XT computer with a 10 MB hard drive.
(Winchester Drive)
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Types of Hard disk
PATA / IDE (Parallel Advanced
Technology Attachment) Having 40 Pins
Molex Connector Use for Power RPM
5400/ 6400/ 7200 PATA is capable of data
transfers speeds of 66/100/133 MBs/3 GBs
second Pata Molex
Sata Molex
Pata IDE
Hard Disk
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SATA Hard disk
SATA (Serial Advanced Technology Attachment)
It is Painless hard disk
SATA Molex Connector Use for Power RPM 7200
SATA is capable of data transfers speeds of
150/300/600 MBs/ to 6 GBs second
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USB / External Hard disk
A USB hard drive is an external hard drive that connects via
USB.
It uses the same design as an internal hard drive, except
comes in an external casing that protects the drive.
The case also includes a USB interface, which allows you to
connect the drive to your USB port using a USB cable.
Data A Data B Data C
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SSD (solid State Drive)
Unlike hard disks , which rotate and have read/write heads that move in and out
Solid state storage devices have no moving parts. Data and information are stored
and retrieved electronically directly from these devices.
It is new hard disk than other , more costly and high speed hdd
It is pinless Hard disk like sata
Sata molex use for power
Sata data cable use
Access speed 6 Gbps plus
Faster Performance
No Vibrations Or Noise
More Energy Efficient
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SCSI (Scuzzy)
Small Computer System Interface
It is hot swap hard disk , use in server
It is available in 50 & 70 pins / pinless also
Access speed 6gps plus
RPM 10k, 15k plus
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What is Partitioning?
Disk partitioning is the process of logically dividing the storage space of a hard disk into separate areas commonly
called as partition or drives
There are three types of partitions
Primary
Extended
Logical
Formatting
Formatting is the process of creating file system on the partition
A file system tells how the files and folders to be created are stored and retrieved.
FAT 16 Use in Windows 98
FAT 32 Use in Windows 98, XP, Vista ,Win 7
NTFS Use in Windows XP, Vista win8, win10, Server OS.
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Thank You
Address => Lower ground Fortune mall behind Maharashtra
bank , Sitabuldi, Nagpur.
Phone => 9975288300
Website => www.pskitservices.com
Yash Mardana
