Division/multiplication by 8 Replace either with a repeated operation by 2. For example, 124×8 = 248×4 = 496×2 = 992. Division/multiplication by 125 Use operations with 8 instead. For example, 37×125 = 37000/8 = 18500/4 = 9250/2 = 4625. Squaring two digit numbers. 1square of roofing covers 100 square feet of roof a bundle is 1/3 of a square. Get the square footage of roof and divide it by 100 and it will give the number of squares you need and for every decimal number over 3 buy a bundle to achieve the amount of material.
How to use: To calculate RAID performance select the RAID level and provide the following values: the performance (IO/s or MB/s) of a single disk, the number of disk drives in a RAID group, the number of RAID groups (if your storage system consists of more than one RAID group of the same configuration) and the percentage of read operations.
For a 4 by 4 square, the magic number is 34. For a 5 by 5 square, the magic number is 65. For a 6 by 6 square, the magic number is 111. For a 7 by 7 square, the magic number is 175. For a 8 by 8 square, the magic number is 260. For a 9 by 9 square, the magic number is 369. For a 10 by 10 square, the magic number is 505.
This calculator does not perform conversion between IO/s and MB/s, and vice versa. If you've switched the units, do not forget to adjust the value in the Single drive performance field.
Optionally, enter the single drive cost to calculate the total storage cost and the cost per TB of usable capacity. Stylus bt bold font.
Amiga forever 2016. Supported RAID levels are RAID0, RAID1, RAID5, RAID6, RAID10 (1+0), RAID50, RAID60. Mediashout keygen. To calculate performance for RAID50 or RAID60 select the RAID Type as RAID5 or RAID6, respectevely, and provide the Number of RAID groups value matching your nested RAID configuration (minimum of 2 groups)
Approximate IOPS and throughput values for different drive types are provided for your reference in the table at the bottom of this page.
Magic Number 2 8 8 – A Better Calculator Estimate Calculator
IOPS (IO/s) and throughput (MB/s) are two common performance measurements for storage devices, such as disk drives and RAID sets. Most often IOPS measurement is used for random small block (4-8 KB) read and/or write operations typical for OLTP applications. MB/s is used for large block (>= 64 KB) random or sequential operations, such as file transfer and streaming.