recover SBS 2003 and exchange 2003 on top, esentutl /p to fix AD, eseutil /p fix exchange

system error
directory service cannot start error status 0xc00002e1

I looked at it, there were hardware raid errors

first / fix active directory
LSASS.EXE - System Error, security accounts manager initialization failed because of the following error: Directory Services cannot start. Error status 0xc00002e1.
http://www.krishaynes.co.uk/2009/03/lsassexe-system-error-when-booting.html

restart it in DSRM, luckily that guy knew their passwd.
tried

1. ntdsutil files repair

no luck at all

eventually

1. esentutl /p

get me pass this point

second / fix exchange store

eseutil /p

eseutil /p “c:\program files\exchsrvr\mdbdata\privl.edb

the edb is about 39GB, stm is 26GB. it took about 10 hours to fix.

then run 
isinteg -s server01 -test allfoldertests
this one needs exchangeIS service running and db dismounted. this time it took about 2 hours to fix