1: | Explain the difference between an interconnect and a SAN. |
A1: | Answer: An interconnect is used inside a cabinet to connect devices to controllers, and a SANis used externally, between systems and storage subsystems. |
2: | What is the maximum distance of a parallel SCSI LVD bus? |
A2: | Answer: 12 meters |
3: | What is the highest-priority address on a 16-bit (wide) SCSI bus? |
A3: | Answer: ID 7 |
4: | Why would you use parallel SCSI disks inside a server system connected to a SAN? |
A4: | Answer: For boot disks |
5: | True or false: Performance with an Ultra ATA/100 disk drive is independent of the type of cable used. |
A5: | Answer: False. It requires the 80-pin cable. |
6: | Name the two main performance shortcomings of ATA disk drives for storage network applications. |
A6: | Answer: No command queuing and no overlapped I/O |
7: | Which Fibre Channel topology is used as a device interconnect? |
A7: | Answer: Loops |
8: | Why isn't Fibre Channel used often for the internal drives inside system cabinets? |
A8: | Answer: They don't have off-the-shelf cables and connectors for use in systems. |
9: | What is the primary capacity scaling issue with SATA? |
A9: | Answer: There is only one drive per SATAconnector. |
10: | List the four interconnects from slowest to fastest performance for storage networking applications. |
A10: | Answer: ATA, SATA, FC, SCSI |