You see this word everywhere everyday. Bitcoin.
Every explanation uses the words like blockchain, cryptography, digital signatures,…
Not mine. This article is different. Just read.
Today I will describe you the real situation from one huge IT environment.
Imagine that you spend million dollars from your budget. You build high-capacity NAS in your primary data center. You build the second one in your backup data center.
All NFS and SMB shares are replicated from primary site to backup one.
Besides the replication you have snapshots configured as well.
But do you have DR?
»
If you don’t know, here is a short summary:
During PgSQL replication troubleshooting, the admin deleted part of the database by mistake. Every real admin made such mistake at least once in the life.
“Let him who didn’t screw up some important system be the first to throw the stone.”
Many storage teams use port numbers instead of WWNs during FC zone configuration. Do you belong to them?
Personally, I think you are making big mistake.
It seems that life is easier with port based FC zones but I will show you it could be opposite.
If every touching of configuration is handled as planned change by your documented processes, read next.
»
To eliminate human errors you are fighting with 3 following issues:
Nobody is solving these problems in most of the companies as there is no time, willingness to do it and often there is a belief that the solution is extremely expensive.
But solution is relatively simple and surprisingly cheap.
»
A pri eliminácii ľudských chýb bojuješ s nasledovnými problémami:
Vo väčšine firiem tieto problémy nikto nerieši. Nie je na to čas, chuť a často presvedčenie, že riešenie je extrémne drahé a tým pádom nie sú ani peniaze.
Riešenie je však relatívne jednoduché a prekvapivo lacné.
»
What’s wrong with it?
Everybody are using them!
At the beginning I have to admit that Storage Lifecycle Policy (SLP) is a great idea. During ancient times of NBU we had NBU Vault available. Nifty tool allowing us to select backup images by various filters and create new copies on tapes prepared to eject from tape library and transport to offsite location. And by reading documentation for 7.6 version it supports duplication from any Storage Unit (STU) to any STU. »
Imagine idea to create tablet application to teach children that have no possibility to visit school.
Or if the school system is not good enough.
Or for any child that wants to learn more than in school.
Did you read The Diamond Age from Neil Stephenson? Great novel.
The main idea is about interactive book.
By telling story is able to teach small girl.
During few years from basic - reading/counting - to programming, self defense,…
Of course. This application will not be such complex but can be some starting point to alternative teaching. I decided to donate.
Great, just do it.
You know this situation. In some remote site you have just some amount of empty tapes available and nobody to add new ones to library available. Or it’s Friday afternoon, tape library is down and you don’t know whether the space on staging disk storage unit will be enough to accomodate wekend backups? Here is a shell oneliner showing sum of last full backups for clients from list of policies (the policies configured for this particular storage unit):
»