bits per day (bit/day) to Gibibytes per hour (GiB/hour) conversion

What is bits per day?

What is bits per day?

Bits per day (bit/d or bpd) is a unit used to measure data transfer rates or network speeds. It represents the number of bits transferred or processed in a single day. This unit is most useful for representing very slow data transfer rates or for long-term data accumulation.

Understanding Bits and Data Transfer

• Bit: The fundamental unit of information in computing, representing a binary digit (0 or 1).
• Data Transfer Rate: The speed at which data is moved from one location to another, usually measured in bits per unit of time. Common units include bits per second (bps), kilobits per second (kbps), megabits per second (Mbps), and gigabits per second (Gbps).

Forming Bits Per Day

Bits per day is derived by converting other data transfer rates into a daily equivalent. Here's the conversion:

1 day = 24 hours 1 hour = 60 minutes 1 minute = 60 seconds

Therefore, 1 day = $24 \times 60 \times 60 = 86,400$ seconds.

To convert bits per second (bps) to bits per day (bpd), use the following formula:

$$\text{Bits per day} = \text{Bits per second} \times 86,400$$

Base 10 vs. Base 2

In data transfer, there's often confusion between base 10 (decimal) and base 2 (binary) prefixes. Base 10 uses prefixes like kilo (K), mega (M), and giga (G) where:

• 1 KB (kilobit) = 1,000 bits
• 1 MB (megabit) = 1,000,000 bits
• 1 GB (gigabit) = 1,000,000,000 bits

Base 2, on the other hand, uses prefixes like kibi (Ki), mebi (Mi), and gibi (Gi), primarily in the context of memory and storage:

• 1 Kibit (kibibit) = 1,024 bits
• 1 Mibit (mebibit) = 1,048,576 bits
• 1 Gibit (gibibit) = 1,073,741,824 bits

Conversion Examples:

• Base 10: If a device transfers data at 1 bit per second, it transfers $1 \times 86,400 = 86,400$ bits per day.
• Base 2: The difference is minimal for such small numbers.

Real-World Examples and Implications

While bits per day might seem like an unusual unit, it's useful in contexts involving slow or accumulated data transfer.

• Sensor Data: Imagine a remote sensor that transmits only a few bits of data per second to conserve power. Over a day, this accumulates to a certain number of bits.
• Historical Data Rates: Early modems operated at very low speeds (e.g., 300 bps). Expressing data accumulation in bits per day provides a relatable perspective over time.
• IoT Devices: Some low-bandwidth IoT devices, like simple sensors, might have daily data transfer quotas expressed in bits per day.

Notable Figures or Laws

There isn't a specific law or person directly associated with "bits per day," but Claude Shannon, the father of information theory, laid the groundwork for understanding data rates and information transfer. His work on channel capacity and information entropy provides the theoretical basis for understanding the limits and possibilities of data transmission. His equation are:

$$C = B \log_2(1 + \frac{S}{N})$$

Where:

• C is the channel capacity (maximum data rate).
• B is the bandwidth of the channel.
• S is the signal power.
• N is the noise power.

Additional Resources

For further reading, you can explore these resources:

• Data Rate Units: https://en.wikipedia.org/wiki/Data_rate_units
• Information Theory: https://en.wikipedia.org/wiki/Information_theory

What is Gibibytes per hour?

Gibibytes per hour (GiB/h) is a unit of data transfer rate, representing the amount of data transferred or processed in one hour, measured in gibibytes (GiB). It's commonly used to measure the speed of data transfer in various applications, such as network speeds, hard drive read/write speeds, and video processing rates.

Understanding Gibibytes (GiB)

A gibibyte (GiB) is a unit of information storage equal to $2^{30}$ bytes, or 1,073,741,824 bytes. It's related to, but distinct from, a gigabyte (GB), which is commonly understood as $10^9$ (1,000,000,000) bytes. The GiB unit was introduced to eliminate ambiguity between decimal-based and binary-based interpretations of data units. For more in depth information about Gibibytes, read Units of measurement for storage data

Formation of Gibibytes per Hour

GiB/h is formed by dividing a quantity of data in gibibytes (GiB) by a time period in hours (h). It indicates how many gibibytes are transferred or processed in a single hour.

$$\text{Data Transfer Rate (GiB/h)} = \frac{\text{Data Size (GiB)}}{\text{Time (h)}}$$

Base 2 vs. Base 10 Considerations

It's crucial to understand the difference between binary (base 2) and decimal (base 10) prefixes when dealing with data units. GiB uses binary prefixes, while GB often uses decimal prefixes. This difference can lead to confusion if not explicitly stated. 1GB is equal to 1,000,000,000 bytes when base is 10 but 1 GiB equals to 1,073,741,824 bytes.

Real-World Examples of Gibibytes per Hour

• Hard Drive/SSD Data Transfer Rates: Older hard drives might have read/write speeds in the range of 0.036 - 0.072 GiB/h (10-20 MB/s), while modern SSDs can reach speeds of 1.44 - 3.6 GiB/h (400-1000 MB/s) or even higher.
• Network Transfer Rates: A typical home network might have a maximum transfer rate of 0.036 - 0.36 GiB/h (10-100 MB/s), depending on the network technology and hardware.
• Video Processing: Processing a high-definition video file might require a data transfer rate of 0.18 - 0.72 GiB/h (50-200 MB/s) or more, depending on the resolution and compression level of the video.
• Data backup to external devices: Copying large files to a USB 3.0 external drive. If the drive can read at 0.18 GiB/h, it will take about 5.5 hours to back up 1 TiB of data.

Notable Figures or Laws

While there isn't a specific law directly related to gibibytes per hour, Claude Shannon's work on information theory provides a theoretical framework for understanding the limits of data transfer rates. Shannon's theorem defines the maximum rate at which information can be reliably transmitted over a communication channel, considering the bandwidth and signal-to-noise ratio of the channel. Claude Shannon