Buffer I/O Error in IBM storage 3500

We have installed RHEL 6.3 in IBM Blade server, all the installation went well, after we assign the LUNs from IBM 3500 storage the server is taking long time to boot also fdisk -l command also taking more time to display the output. The below is the error message we are getting.

un 14 21:38:59 alysurprddbol02 kernel: end_request: I/O error, dev sdl, sector 56
Jun 14 21:38:59 bol02 kernel: end_request: I/O error, dev sdl, sector 0
Jun 14 21:38:59 bol02 kernel: end_request: I/O error, dev sdl, sector 0
Jun 14 21:38:59 bol02 kernel: end_request: I/O error, dev sdl, sector 0
Jun 14 21:38:59 bol02 kernel: end_request: I/O error, dev sdl, sector 0
Jun 14 21:38:59 bol02 kernel: end_request: I/O error, dev sdl, sector 0

"Buffer I/O error on device sdb, logical block 131071287"
....
"Buffer I/O error on device sdc, logical block 131073487"
....
end_request : I/O error, dev sdc, sector 8

Thanks and Regards

C. Rajesh