Disk Drives

This includes both physical drives and virtual drives. Physical drives can be internal or  external, magnetic or solid state, IDE, SCSI, SATA, SAS, USB or just about any connection. Disk drives have a partition structure.  This is also known as a volume structure. Each partition or volume also has a file structure. Not all Operating Systems (OS) read all partition …

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Cable Modem Signals and Strengths

Definitions SNR (Signal to Noise Ratio) levels: This is how clear the signal is at either the modem receiver (downstream SNR) or the receiver in the cable company head-end (upstream SNR). Compares the level of a desired signal to the level of background noise. SNR is defined as the ratio of signal power to the noise power expressed in decibels. …

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