IIRC this storage engine used to have a 2GB limit, but it did not properly check this limit and would corrupt itself if you tried to store too much. This caused problems for Exchange, Outlook, the ironically named Visual Source Safe, and probably others.
This engine was never storage for Outlook, nor I _think_ Visual Source Safe (but can't be sure of that). The JET Blue engine often gets confused with the JET Red engine, which were both completely different implementations of the JET API spec. See notes bottom of this page:
https://docs.microsoft.com/en-us/windows/win32/extensible-st...
I say "we" because I am one of the developers who has worked on the engine for the last 15 years (around half of it's existence).
Since I have worked on the engine, it has had a limit of slightly less than 2^31 database pages, which since it has a variable page size, has historically been 4 to 64 TBs.
Even before the 2nd rewrite in the 90s, I believe it had a 16 GB limit, so I really think the 2 GB is JET Red.
Yes, Exchange 4.0 databases had a 16Gb limit and it was recognized then that this was insufficient. The next release increased that limit dramatically.
Comments
IIRC this storage engine used to have a 2GB limit, but it did not properly check this limit and would corrupt itself if you tried to store too much. This caused problems for Exchange, Outlook, the ironically named Visual Source Safe, and probably others.
This engine was never storage for Outlook, nor I _think_ Visual Source Safe (but can't be sure of that). The JET Blue engine often gets confused with the JET Red engine, which were both completely different implementations of the JET API spec. See notes bottom of this page: https://docs.microsoft.com/en-us/windows/win32/extensible-st...
I say "we" because I am one of the developers who has worked on the engine for the last 15 years (around half of it's existence).
Since I have worked on the engine, it has had a limit of slightly less than 2^31 database pages, which since it has a variable page size, has historically been 4 to 64 TBs.
Even before the 2nd rewrite in the 90s, I believe it had a 16 GB limit, so I really think the 2 GB is JET Red.
Brett Shirley [MSFT]
Yes, Exchange 4.0 databases had a 16Gb limit and it was recognized then that this was insufficient. The next release increased that limit dramatically.
This explains ONE of the causes of corruption of PST files back in the day.
PST never used this storage engine. It used NDB.