(H8) Day4 Hardware Basics part5 Storage Devices, HDD and SSD

20240606 122840
Secondary Storage Devices:
Magnetic Storage Devices
Hard disk
Floppy disk
Zip drive
Tape drive
Optical Storage Devices
Compact Disc (CD)
Digital Versatile Disc (DVD)
Blu Ray Disc (BRD)
Floppy Disk -3 1/2 - 1.44MB
Zip Disk - 100MB, 250MB.,
Tape Drive -DDS/DAT still we are using , Cheaper Backup solution, 40G,80G,160G,320G.,
CD - 700 MB(600-650MB)
DVD - 4.7 GB, 8 or 8.5 GB
Blu Ray - 25GB, 50GB
--------------------------------
*SCSI - Small Computer System Interface - SCSI Disk/CDROM/Printer/Scanner
SAS - Serial Attached SCSI (Disk)
Store Operating System, Application, Data- music, video, documents
Internal HDD (PATA/SATA)
SSD (Solid State Devices) NAND - NVMe - M.2 , SATA
eMMC - Mobile - mini laptops
To store data externally - USB Pendrive, USB External HDD, SD Cards
-------------------------------------------------------------------------------------
Hard Disk
Uses Magnetic Media for Storing Data
Non-Volatile Permanent Storage Device
Mass Storage Device
Interfaces Used
IDE / EIDE --PATA
SATA
ATA - Advanced Technology Attachment
PATA - Parallel ATA -40pin - ribbon
SATA - Serial ATA 7 pin - single wire
SATA is faster than PATA
SATA III - 6Gbps
IDE/PATA hard disk
SATA Hard Disk
Internal HDD - 3.5in , 2.5in
3.5in - Desktops
2.5in - Laptops, Mini PC
---
External HDD - Backup, Storage Data (which not required to be in PC)
(320GB, 1TB, 2TB) - transfor heavy data
-----------------------------------------------------------
SSD
SSD - Solid State Drive
-NAND memory
-data stores in chips
-HDD data stores in Platter
-Non volatile
-light weight - carry easily
-easy to transport
-less power consumption
-small size
-high speed -read and write , transmission
-Suitable for Operating system and Application - faster booting , faster app loading
-Not suitable for storing regular data - we can store but SSD is costly
-costly
-compare 1TB HDD - 1TB SSD
NAND SATA SSD
-connecting to SATA interface on MB
-Read and Write speeds up to 540MB/s and 500MB/s
NAND NVMe M.2 SSD
-faster than SATA SSD
-costly
-Inserting into motherboard like RAM or CPU
-reads or writes up to 2400MB/s - 1900MB/s -P2
- Impressive read/write speeds up to 5000/4200MB/s1.--P3
----------------------------------------------------------------------------------------------