https://community.hpe.com/t5/disk-enclosures/msa30/m-p/4619711#M34809 I assume you have a dual bus configuration and a problem with the second bus. Try the good known HBA with the other channel to ensure the enclosure is good. Mon, 19 Apr 2010 10:07:56 GMT Torsten. 2010-04-19T10:07:56Z https://community.hpe.com/t5/disk-enclosures/msa30/m-p/4619710#M34808 HDD install in slot 8-14 cannot detect in ACU. Unplug both SCSI connector from MSA 30, all HDD blinking (1-14).<BR /><BR />Any configuration needed before install new HDD in slot 8-14? Mon, 19 Apr 2010 05:24:54 GMT https://community.hpe.com/t5/disk-enclosures/msa30/m-p/4619710#M34808 Nizam_1 2010-04-19T05:24:54Z https://community.hpe.com/t5/disk-enclosures/msa30/m-p/4619711#M34809 I assume you have a dual bus configuration and a problem with the second bus. Try the good known HBA with the other channel to ensure the enclosure is good. Mon, 19 Apr 2010 10:07:56 GMT https://community.hpe.com/t5/disk-enclosures/msa30/m-p/4619711#M34809 Torsten. 2010-04-19T10:07:56Z https://community.hpe.com/t5/disk-enclosures/msa30/m-p/4619712#M34810 Thanks Torsten.<BR /><BR />But the MSA is connected direct attach to server using SCSI. Enclosure have 2 SCSI port A and B. Both SCSI connected to server SCSI card A1 and B1.<BR /><BR />Is that any configuration need to be done in SCSI card level (from server) or the enclosure itself having problem?<BR /><BR />FYI, I've done troubleshooting; change the SCSI cable, reboot the MSA, change the HDD slot but same issue.<BR /><BR /> Tue, 20 Apr 2010 01:41:09 GMT https://community.hpe.com/t5/disk-enclosures/msa30/m-p/4619712#M34810 Nizam_1 2010-04-20T01:41:09Z