I've a server working as main domain controller with win 2003 Enterprise Edition and having Exchange 2003 sp2 (6.5) server. The server is HP ml350 brand.and the exchange is installed on a partition .Raid 0 applied .after many months of using i discovered that the server doesn't take the full backup.which cause a huge data base and thousands transaction log files which take 1 GB of the disk space daily . day by day the partition becomes closer to be full . i still having 23 G free space .which means about 23 days to solve the problem or it will be full. please not i don't have cleaned full backup and i may lose everything . after reading event viewer i got this error
"Information Store (184) First Storage Group: The database page read from the file "E:\Exchange\mdbdata\priv1.edb" at offset 26171146240 (0x0000000617ec0000) Event ID=474 Source =ESE (database page 6389439 (0x617EBF)) for 4096 (0x00001000) bytes failed verification due to a page checksum mismatch. The expected checksum was 6126068653985666087 (0x55042afbc6789427) and the actual checksum was 5823487668065036935 (0x50d12f2e10e26a87). The read operation will fail with error -1018 (0xfffffc06). If this condition persists then please restore the database from a previous backup. This problem is likely due to faulty hardware. Please contact your hardware vendor for further assistance diagnosing the problem. "
i have dismounted the mail box store to copy the edb file offline.after many hours error occurring and it's not copied.

what i should do solve it . i want to get cleaned backup and deploy it
Best Reagrds
Eng.Mohammad Noor