| 1: | What does RAID stand for? |
| A1: | Answer: Redundant array of inexpensive disks |
| 2: | What kinds of storage entities can be members of a RAID array? |
| A2: | Answer: Any storage address space: Devices, subsystems, SCSIlogical units, and volumes |
| 3: | True or false: RAID members have to be the same size. |
| A3: | Answer: True |
| 4: | What is the Boolean function used in parity RAID? |
| A4: | Answer: XOR |
| 5: | What is the purpose of parity with RAID? |
| A5: | Answer: Parity RAIDprovides efficient data redundancy. |
| 6: | Describe the difference between strips and stripes. |
| A6: | Answer: Strips are written to individual members, and stripes are all the related strips with a common parity value. |
| 7: | What is the best possible MTDL in a RAID 5 array? |
| A7: | Answer: MTBF+ MTBF/2, using the MTBFspecification for member drives in the array |
| 8: | Briefly explain the RAID 5 write penalty. |
| A8: | Answer: The RAID5 write penalty is the process of reading both old data and parity data from disk to re-create new parity data to go with new data being written to a member strip in the array. |
| 9: | What is the maximum number of member pairs in a RAID 10 array? |
| A9: | Answer: There is no maximum. |
| 10: | What is the most common type of parity RAID used today? |
| A10: | Answer: RAID5 |