When does my array run out of room?
Type in your own numbers. The answer shows with the math behind it, and nothing you type leaves this page.
Every space box is in TB. If your array's screen shows TiB, use TiB in every space box and TiB per hour for the speed: the days and dates come out the same. Mixing the two gives a wrong answer.
The grey numbers in the boxes are examples, not anyone's real data.
Your answer
Fill in the boxes above and your answer shows here.
Some boxes are still empty or need fixing. Each one says what it needs.
Worth knowing
Hour by hour
The math, step by step
What this assumes
What this does not prove
Two readings make a straight line. It does not show a project, a migration or a cleanup that changes the growth, and it does not show when performance drops before the array is full.
How many days would it take to copy my array?
Type in your own numbers. The answer shows with the math behind it, and nothing you type leaves this page.
Every space box is in TB. If your array's screen shows TiB, use TiB in every space box and TiB per hour for the speed: the days and dates come out the same. Mixing the two gives a wrong answer.
The grey numbers in the boxes are examples, not anyone's real data.
Your answer
Fill in the boxes above and your answer shows here.
Some boxes are still empty or need fixing. Each one says what it needs.
Worth knowing
Hour by hour
The math, step by step
What this assumes
What this does not prove
This counts copying alone, at full speed. It is the least the move takes, not the length of the project: testing, cutover and checking the copy come on top.
What does my array cost me a year?
Type in your own numbers. The answer shows with the math behind it, and nothing you type leaves this page.
Every space box is in TB. If your array's screen shows TiB, use TiB in every space box and TiB per hour for the speed: the days and dates come out the same. Mixing the two gives a wrong answer.
The grey numbers in the boxes are examples, not anyone's real data.
Your answer
Fill in the boxes above and your answer shows here.
Some boxes are still empty or need fixing. Each one says what it needs.
Worth knowing
Hour by hour
The math, step by step
What this assumes
What this does not prove
This adds up four running costs you already pay. It leaves out what an outage, a slow restore or a failed disk would cost, and it is not a price for anything new.
Am I promising servers more space than the array holds?
Type in your own numbers. The answer shows with the math behind it, and nothing you type leaves this page.
Every space box is in TB. If your array's screen shows TiB, use TiB in every space box and TiB per hour for the speed: the days and dates come out the same. Mixing the two gives a wrong answer.
The grey numbers in the boxes are examples, not anyone's real data.
Your answer
Fill in the boxes above and your answer shows here.
Some boxes are still empty or need fixing. Each one says what it needs.
Worth knowing
Hour by hour
The math, step by step
What this assumes
What this does not prove
There is no safe ratio that fits every array. This is one reading on one day, not how fast real space fills.
What does one rack unit cost me a month?
Type in your own numbers. The answer shows with the math behind it, and nothing you type leaves this page.
The grey numbers in the boxes are examples, not anyone's real data.
Your answer
Fill in the boxes above and your answer shows here.
Some boxes are still empty or need fixing. Each one says what it needs.
Worth knowing
Hour by hour
The math, step by step
What this assumes
What this does not prove
This is an average across the rack, not the true cost of one system. Staff time and software licenses are not in it.
What would bringing my cloud copy home cost, and how long would it take?
Type in your own numbers. The answer shows with the math behind it, and nothing you type leaves this page.
The grey numbers in the boxes are examples, not anyone's real data.
Your answer
Fill in the boxes above and your answer shows here.
Some boxes are still empty or need fixing. Each one says what it needs.
Worth knowing
Hour by hour
The math, step by step
What this assumes
What this does not prove
This is the wire alone: no restore time, no fees beyond the one rate typed in, no partial restores. It is the least the move costs and takes, not the whole of it.
Can IT bring it back as fast as the business expects?
Type in your own numbers. The answer shows with the math behind it, and nothing you type leaves this page.
The grey numbers in the boxes are examples, not anyone's real data.
Your answer
Fill in the boxes above and your answer shows here.
Some boxes are still empty or need fixing. Each one says what it needs.
Worth knowing
Hour by hour
The math, step by step
What this assumes
What this does not prove
The owner's answer is an opinion, and IT's time is only as good as a timed restore. A gap here is a question to ask, not a finding.
How slow is our busiest hour, next to the average?
Type in your own numbers. The answer shows with the math behind it, and nothing you type leaves this page.
The grey numbers in the boxes are examples, not anyone's real data.
Your answer
Fill in the boxes above and your answer shows here.
Some boxes are still empty or need fixing. Each one says what it needs.
Worth knowing
Hour by hour
The math, step by step
What this assumes
What this does not prove
This is one day and one measure. A slow hour on one day is a question to watch for a week, not a pattern.
Can my storage feed the AI project?
Type in your own numbers. The answer shows with the math behind it, and nothing you type leaves this page.
The grey numbers in the boxes are examples, not anyone's real data.
Your answer
Fill in the boxes above and your answer shows here.
Some boxes are still empty or need fixing. Each one says what it needs.
Worth knowing
Hour by hour
The math, step by step
What this assumes
What this does not prove
This compares one rate with one rate. It says nothing about latency, small random reads, or the project running beside everything else.
Why does a storage request take so long?
Type in your own numbers. The answer shows with the math behind it, and nothing you type leaves this page.
The grey numbers in the boxes are examples, not anyone's real data.
Your answer
Fill in the boxes above and your answer shows here.
Some boxes are still empty or need fixing. Each one says what it needs.
Worth knowing
Hour by hour
The math, step by step
What this assumes
What this does not prove
This is one request, not a pattern. It shows where this one waited, not why, and not whether the next one will.
Before you type anything
- What it touches
- Only the numbers you type into this page, on your own device. It touches none of your systems, and nothing you type is sent, saved or tracked: close the page and the figures are gone.
- How to check that yourself
- Open your browser's developer tools at the Network tab, then use this page: nothing new shows in the list. Once the page has loaded it also works with your connection off.
- Who made it
- StepKnock, a small team in San Diego working on storage, backup, recovery and security. IBM Silver Business Partner.
- How StepKnock gets paid
- Through our partners, when a customer buys. This page sells nothing and asks for nothing.