- Buy hardware and it employees staff and do it themselves
Advantage: you can restore very quickly with it people
Disadvantage: you have to pay the people
- Employ off staff mass storage company
Mass storage companies are located in Phoenix (data storage)
Save to storage services instead of hard drive
Advantage: don't have to employ people
Disadvantage: recovery is not the easiest
- Port there storage cloud
Things get saved on another harddrive
Which one is best? Depends on the company
The variety of ways a computer system stores (saves) FINISH
A filing cabinet is a hard drive or an optical disc
Hole or not a hole: land and a hole
These disk are incredibly slow
Secondary storage (hard drive) (non volatile)
- Retains info even when the computer is turned off
- Not accessible by the cpu
- WAY SLOWER THAN PRIMARY (RAM)
- Always higher capacity than primary storage
- Make use of output/input channel
Primary storage
- RAM
- Volatile (does not retain info when turned off)
- No physical movement
- Accessed in any order (speed)
- Computers are binary, made up of two things
- Two parts: positives or negative charges on a hard drive
- Charges are represented by ones and zeros
- - input: keyboards or microphones: translate what a human understands to ones and
zeros for the computer to use
- - output: monitors and printers: translate ones and zeros into what a human understands
A “one” is a bit. A “Zero” is a bit.
When 8 bits are combined they become a “byte”. Bytes can be used to represent characters:
0100001: A
“A” (According to the American Standard Code for information interchange:
Japan uses Unicode to represent ones and zeros
Physical Storage Characteristics:
- Requires a read/write head
- RECORD (WRITES) DATA AND INFO
- Accesses (read) data and info
- Electromagnetic, holds positive and negative charges
- Divided into pie shapes called sectors
- More than one sector comprises a cluster
- Table of contents is “FAT”
Characteristics of storage media: look at powerpoint
- Magnetic tape: unlimited storage, slowest and cheapest (sequential: looks like a tape
you have to wind it)
- RAID: unlimited
- iDrive (pre-cloud): unlimited
- Mass storage: unlimited
- Cloud storage: unlimited
All these things were though of long time ago but internet speed were slow that these things
weren't viable (youtube, cloud, etc.)
Vpn:
The cloud is basically a filing cabinet not on your computer, accessible from anywhere
CLOUD STORAGE: DOES IT RENDER ALL OTHER BACKUP METHODOLOGIES USELESS?
- YES, THE CLOUD IS THE BEST TO BACKUP, ALL OTHERS ARE OBSOLETE
Mass storage and cloud are the essentially the same.
KNOWLEDGE CHECK 5:
1. NEWER VERSION OF FAT? NTFS
2. MEANT BY THE VARIETY OF WAY COMP CAN SAVE DATA AND STORAGE?
COMPUTER STORAGE
3. MAGNETIC TAPE IS STILL USED FOR WHAT TYPE? MAINFRAME COMP
4. STORAGE DEVICE STACKED PLATTERS? RAID
5. READ/WRITE HEAD? RECORD PLAYER ARM
6. OP SYSTEMS HAVE MODELED AFTER WHAT? FILING CABINETS
7. CODING SCHEMES DO MAINFRAMES? EBCDIC
8. PLAN FOR FUTURE CATASTROPHE? DISASTER RECOVERY
9. 1024
10. REEL TO REEL? MAGNETIC TAPE
11. SLOWEST? MAGNETIC TAPE
12. CODING SCHEME FOR JAP? UNICODE
13. STORAGE FOR FLOPPY? 1.44 MG
14. FAT MEAN: FILE ALLOCATION TAPE
15. YOTTABYTE: BRONTOBYTE
16. BITS IN A BYTE? 8
17. CODING ON MICRO? ASCB
18. TABLE OF CONTENT DISK DRIVE? FAT
19. PHYSICAL ITEMS LIKE DESK AND COMPUTERS ARE WHAT IN BUZ? TANGIBLE
PROPERTY
20. HOW IS DATA STORED? ARCHIVE
21. IN COMPUTING WHERE USER STORES THEIR WORK? SECONDARY STORAGE
22. PRIMARY STORAGE NO PHYSICAL STORAGE? RAM
23. STORAGE IS READ SEQUENTIALLY? MAGNETIC TAPE
24. CAPACITY OF CLOUD STORAGE? UNLIMITED
25. WHERE USER WORKS? PRIMARY STORAGE
