RAID Characteristics and Storage

Question 1

Name all RAID Configurations

Answer 1

RAID 0

RAID 1

RAID 10

RAID 5

Question 2

RAID 0 (Disk Stripping)

Min. Drives?
How is data stored?
Redundancy?
Performance?

Answer 2

2 or More Drives

Data is Split

No Redundancy

Fast Performance

Question 3

RAID 1 (Disk Mirroring)

Min. Drives?
How is data stored?
Redundancy?
Performance?

Answer 3

2 or More Drives

Drives are mirrored

Full Redundancy

Slow Performance

Question 4

RAID 10 (Disk Stripping & Mirroring)

Min. Drives?
How is data stored?
Redundancy?
Performance?

Answer 4

4 or More Drives (Must be even)

1 Set is RAID 0 / 1 set is RAID 1

Full Redundancy

Fast Performance

Question 5

RAID 5 (Parity)

Min. Drives?
How is data stored?
Redundancy?
Performance?

Answer 5

• 3 or More Drives
• In Parity across all drives
• Full Redundancy (Only if ONE drive fails)
• Faster than RAID 1, but less storage than RAID 10. Slow Performance until failed drive is replaced

Question 6

What is the maximum RPM value available in modern HDDs?

Answer 6

15,000 RPM (15K)

Question 7

What are the common form factors for HDD in…

• Laptops
• Desktops

Answer 7

• 2.5 Inch
• 3.5 Inch

Question 8

Name 2 interfaces used by SSDs

Answer 8

• NVMe (PCIe)
• SATA

Question 9

Name 2 form factors used by SSDs

Answer 9

• M.2
• mSATA

Question 10

What form factor has superseded the M.2 form factor?

Answer 10

mSATA

Question 11

What are 5 known flash memory card formats?

Answer 11

• SD
• CompactFlash
• microSD
• miniSD
• xD (Old)