Storage information
- Created by: benjacko
- Created on: 12-02-16 10:59
View mindmap
- Storage information
- Flash memory
- USB Memory sticks
- Flash memory connected to a USB interface
- Can be used to move any type of file between computers
- Cheaper than other devices such as Hard disks dependent on the capacity of the memory unit
- Average capacity of around 8-16GB
- Memory cards
- Small flash memory chips used in cameras, phones, Mp3 players
- Examples include SD cards
- USB Memory sticks
- Magnetic storage
- Floppy disk
- 1.44mb storage
- Small storage allows for small files to be backed up
- Can only be read and accessed by a floppy disk drive
- Portable, therefore files can be transferred and backed up on other computers
- Fixed hard disk
- 2 Terrabytes or more in size
- Useful for storing large amounts of data such as operating systems, software and programs
- Suitable for applications that require fast access to data for reading and writing to
- Data can be accessed quicker than floppy disks, CDs and DVDs
- Not portable in any way as it is fixed inside of the computer
- Slower transfer rate than solid state devices
- Will slow down in performance when running out of storage space
- Fragile/must be handled with care
- Portable hard disks
- 2 Terrabytes or more in storage
- Used to store large personal files such as images or videos
- Faster/more reliable access than floppy disks
- Portable storage device, unlike the fixed hard disk
- Slows down when running out of storage space
- Fragile/must be handled with care
- Floppy disk
- Optical memory
- Read only disks
- CD-ROM
- Compact read-only disc, therefore data cannot accidentally edited or deleted
- Holds around 800mb of data
- Can be used to store data such as software (games and office applications), music and sound/video
- Requires and PC and optical drive to access data
- Cheaper than magnetic media
- Data can be rendered unreadable if scratched
- DVD-ROM
- Around 4.7gb Storage
- More storage than CD-ROMs, therefore they can be used to store and transfer high-quality videos
- Slower transfer rate than hard disks
- CD-ROM
- High capacity optical disks
- Blu-ray
- Holds 25-50GB of data
- Used in the same way as DVD-ROMs, except they can also be used to store very high quality videos/films
- HD-DVD
- Holds around 15GB of data
- Used to store high quality videos in the same way as Blu-ray
- Blu-ray
- Recordable optical disks
- CD-R and DVD-R
- Data can be written onto them, but not erased
- Data can be added until the disc is full, however this cannot be removed and the disk cannot be reused
- Around 650mbs of storage for CD-R, whilst 4.7GB for DVD-R
- CD-RW and DVD-RW
- CD Rewritable and DVD rewritable can have data burnt onto them and also erased so that the disc can be reused
- CD-RW has a capacity of 700MB whilst DVD-RW has 4.7GB
- CD-R and DVD-R
- Read only disks
- Durability - how long the device will last dependent on its lifecycle and ability to withstand damage
- Speed - how quick the data can be accessed on the device
- Portability - how easily the device can be carried and transferred between systems
- Reliability - how reliable the device is in terms of protecting stored data
- Flash memory
Comments
No comments have yet been made