Chapter 4: Hardware Technology Flashcards
This chapter defines the server subsystems.
The subsystems in a server are?
- Processor and cache
- PCI bus
- Memory
- Disk
- Network
- Video
- Operating system
Many people mistakenly believe that the ___ is often the source of a performance bottleneck so buying a server with the fastest ___ is best.
CPU
The ___ ___ is the “pipe” along which all data traverses into and out of the server.
PCI Bus
New memory technologies include the ____ and _________, providing
higher capacity, bandwidth, and improved flexibility.
DDR3 and MetaSDRAM
Most file request traffic uses ____ ______ ______ (three words)
Direct Memory Access
Cache is physically packaged with what these days?
CPU
Memory Mirroring is used to provide an increase in what?
Fault-Tolerance
The pyramid of online storage devices consist of what?
Cache, Memory, and Disk
The three states that can be used to reduce CPU power usage are?
- T-state
- P-state
- C-state
When a CPU is in T-State, what is happening?
It is being throttled by having STPCLK (stop clock) signals inserted.
What happens in to a P-state CPU?
The clock tick rate is reduced
Demand Based Switching allows for what?
Automatic switching of CPU Power Saving States based off of load.
What happens in to a C-state CPU?
Allows the clock to be halted.
When the CPU is active, it always runs at what C level?
C0
What is power capping?
The specific lower limit setting in terms of number of watts.
