THESE ARE A FEW OF MY FAVORITE internet calculators: Converters, Transfer Calcs, RAID, etc.

TrumanHW

Member
Sep 16, 2018
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Solve for: Transfer TIME, Transfer RATE, or The Capacity Transferred ... with the same calculator.
Need a physics equation but don't know what it'd be called ..? OMNICALCULATOR.
All with the same scheme -- provide any 2 values -- it solves the third. No changing equations.

Ohm's law, Watts, or Acceleration / G-Force, Feet/Sec, Time, whatever.
I know you know many of these, but it can solve arguments or teach customers.


Over the years -- THESE are the websites I keep going back to, over and over again -- and they deserve homage.

WebsiteHow it's Useful:Exact URL if not the HomePage:
OmniCalculator.comFor virtually ANY formula, with any variables
WintelGuy.comRAID, IOPs, etc ...
Calomel.orgCalculated ZFS config's performance: R, R&W, W



My EXEMPLAR of a, better than average but
still CRAPPY calculator website ...

View attachment 19544




WHERE GOOD BEGINS
(and I'm sure most of you know Calomel)


Calomel.org
ZFS performance metrics for < 300 configurations
Here's but a MINUTE FRACTION of the DataBase Calomel has:


QTY + TYPE
HD CAPACITY
CONFIG
Formatted Capacity
100% Write
MIXED - R + W
100% Read
1x Spinning​
4 TB​
Single HD​
3.7 TB​
108 MB/s.​
50 MB/s​
204 MB/s​
2x Spinning​
4 TB​
RAID1 / Mirror​
3.7 TB​
106 MB/s​
50 MB/s​
488 MB/s​
2x Spinning​
4 TB​
RAID0 / Striped​
7.5 TB​
237 MB/s​
73 MB/s​
434 MB/s​
24x Spinning​
4 TB​
12x Striped Mirrors​
45.2 TB​
696 MB/s​
144 MB/s​
898 MB/s​
24x Spinning​
4 TB​
RAID5 / RAIDz1​
86.4 TB​
567 MB/s​
198 MB/s​
1304 MB/s​
24x Spinning​
4 TB​
RAID6 / RAIDz2​
82.0 TB​
434 MB/s​
189 MB/s​
1063 MB/s​
24x Spinning​
4 TB​
RAID7 / RAIDz3​
78.1 TB​
405 MB/s​
180 MB/s​
1117 MB/s​
24x Spinning​
4 TB​
RAID0 / Striped​
90.4 TB​
692 MB/s​
260 MB/s​
1377 MB/s​
24x SATA SSD​
256 GB​
RAID0 / Striped​
5.5 TB​
1620 MB/s​
796 MB/s​
2043 MB/s​


Actual DataBase Pictured Below:
View attachment 19545






OMNIcalculator.com : The first website I was discussing in this thread.

Has TONS of calculators, all of which solve for the field left blank.
As in, you don't need to change to a calculator that solves for the variable you care about.
Enter "good and fast" and it'll tell you what the price is. :)



CATEGORIES
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FILTERS

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REFINED FILTERS

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Entering values for in any two fields solves for the field left blank --

Without select an analogous formula -- which often aren't provided.

View attachment 19549


Filling in any two -- solves for what's left blank:

View attachment 19550


Hope is useful for someone. Just grateful for the people who've been so generous with their time, knowledge & expertise...

with issues I'd still be struggling to solve to this day! Wish there were more I could do to collectively "say thanks."