The "Great Dataclysm" (named after the Great Cataclysm in BIONICLE) was the event in which over two years' worth of BZPB posts - March 31, 2008 to April 25, 2010 - were deleted by a hacker named "CrackJag" and the BZP staff.
It all started when a hacker by the name of "CrackJag" hacked into BZPower's servers and caused chaos to get revenge on the BZP admins for behaving like tyrannical assholes. While he wasn't exactly wrong about them being assholes, his antics caused major damage to the original BZPB topic. Other topics related to BZPB, such as some of the original BZPB epics, were also affected.
Some time after CrackJag's first attack, around ten or so pages in the middle of the BZPB topic survived, but everyone forgot to save them on the Wayback Machine so they were deleted again when the BZPower staff made the decision to delete the archives for good in order to prevent CrackJag from exploiting security vulnerabilities that may have been present in them.
BZPower's official statement (July 24, 2013)
Earlier this year we began to have some problems with our Archives, the instance of the old forums with all the posts from before the recent major upgrade. This was in part due to a malicious individual who deleted parts of the database as well as several backups that were stored on our server. The Administration has done our best to try to restore things, but there's still a lot of missing content that I'm afraid no longer exists. In addition, the software that keeps the archives running has become outdated and insecure, and may be part of how portions of the site were hacked recently. With all this in mind, we have made the decision to close down the Archives and move forward, focusing on our new forums and the future of BZPower. It was not an easy decision, but in the end, there was not much we could do. On behalf of the Administration, I'm truly sorry that we have to do this, but I'm hoping everyone can understand the reasons behind our decision. View the full article
Data lost in the crash
All BZPB related posts and topics from March 31, 2008 to April 25, 2010 were lost forever, because none of us considered saving it in the Wayback Machine. Hindsight is a wonderful thing, I guess...
- The story arcs Beginning to Shadows Rising
- 50,000 years afloat written by User:MakutaYnot
- BZPB: The Epic written by User:Kon
- Stranded on Auroras written by User:FullFrontal
- BZPB: Peace for our Time written by User:FullFrontal
- BZPB: Strong World written by ???
A category for pages for subjects that were significantly affected by the Dataclysm has also been created.