SCSI ULTRA320 0/3/2/0 INSTANCE 6:EXTERNAL SCSI BUS RESET

After SCSI PCI card replacement on the server Micky, below messages were seen in the syslog and dmesg : and disk were seen in no_hw
status.
Below step were tried to fix the issue :
1-Connectoin between server and DAS were checked : OK
2-Server were reboot to see the disk status : Still disk are missing and no_hw status in ioscan.
3-MSA30 was reboot (make sure it not shared among other servers.) : still did not resovle the issue.
Issue found :
After card replacement the path of SCSI card has been change, to resolve the issue it has been reset to old one.
dmesg/syslog
Dec  1 04:16:24 Mickey vmunix:    errors.  The error entries will be lost until the cause of
Dec  1 04:16:24 Mickey vmunix:    the excessive error logging is corrected.
Dec  1 04:16:24 Mickey vmunix:    Use oserrlogd(1M) man page for further details.
Dec  1 04:16:27 Mickey vmunix: SCSI Ultra320 0/3/2/1 instance 7:      External SCSI bus reset detected.       Condition cleared, no intervention required.
Dec  1 04:16:37 Mickey vmunix: SCSI Ultra320 0/3/2/0 instance 6:      IO Type : MPT Domain Validation IO has timed-out.       Target ID: 0, LUN ID: 0.       Inquiry Command - CDB: 12 00 00 00 40 00
Dec  1 04:16:38 Mickey vmunix: SCSI Ultra320 0/3/2/0 instance 6:      External SCSI bus reset detected.       Condition cleared, no intervention required.
Dec  1 04:16:27 Mickey vmunix: SCSI Ultra320 0/3/2/1 instance 7:      External SCSI bus reset detected.       Condition cleared, no intervention required.
Dec  1 04:17:13 Mickey vmunix: SCSI Ultra320 0/3/2/1 instance 7:      External SCSI bus reset detected.       Condition cleared, no intervention required.
Dec  1 04:17:29 Mickey vmunix: DIAGNOSTIC SYSTEM WARNING:
Dec  1 04:17:29 Mickey vmunix:    The diagnostic logging facility is no longer receiving excessive
Dec  1 04:17:27 Mickey vmunix: SCSI Ultra320 0/3/2/0 instance 6:      External SCSI bus reset detected.       Condition cleared, no intervention required.
Dec  1 04:17:29 Mickey vmunix:    errors .  21  error entries were lost.
Dec  1 04:17:29 Mickey vmunix: SCSI Ultra320 0/3/2/1 instance 7:      External SCSI bus reset detected.       Condition cleared, no intervention required.
Dec  1 04:17:39 Mickey vmunix:    The diagnostic logging facility has started receiving excessive
Dec  1 04:17:39 Mickey vmunix:    errors.  The error entries will be lost until the cause of
Dec  1 04:17:39 Mickey vmunix:    the excessive error logging is corrected.
Dec  1 04:17:39 Mickey vmunix: DIAGNOSTIC SYSTEM WARNING:
Dec  1 04:17:39 Mickey vmunix:    Use oserrlogd(1M) man page for further details.
Dec  1 04:17:39 Mickey vmunix: SCSI Ultra320 0/3/2/0 instance 6:      External SCSI bus reset detected.       Condition cleared, no intervention required.
Dec  1 04:17:41 Mickey vmunix: SCSI Ultra320 0/3/2/1 instance 7:      External SCSI bus reset detected.       Condition cleared, no intervention required.
Dec  1 04:17:53 Mickey vmunix: SCSI Ultra320 0/3/2/1 instance 7:      External SCSI bus reset detected.       Condition cleared, no intervention required.
Dec  1 04:18:37 Mickey vmunix: SCSI Ultra320 0/3/2/1 instance 7:      External SCSI bus reset detected.       Condition cleared, no intervention required.