https://community.hpe.com/t5/disk-enclosures/4si-raid/m-p/3981985#M23480 Hi,<BR /><BR />IMHO it is very unlikely to have 3 or 4 bad disks at a time.<BR />Consider to have a bad cable, termination, disk chassis or even a bad controller. Mon, 16 Apr 2007 06:09:34 GMT Torsten. 2007-04-16T06:09:34Z https://community.hpe.com/t5/disk-enclosures/4si-raid/m-p/3981984#M23479 rp 5430 having 4si raid card connected to 2100 JBOD. HAS TWO FAILED DRIVES .I manually made one disk online and tried to replace one disk, it failed during rebild.So i took backup and rebuild the raid with 2 new hdds and restored data.Even after one day it again failed the new replaced hdds.am attaching the logs and ir reports Mon, 16 Apr 2007 05:33:19 GMT https://community.hpe.com/t5/disk-enclosures/4si-raid/m-p/3981984#M23479 pms007 2007-04-16T05:33:19Z https://community.hpe.com/t5/disk-enclosures/4si-raid/m-p/3981985#M23480 Hi,<BR /><BR />IMHO it is very unlikely to have 3 or 4 bad disks at a time.<BR />Consider to have a bad cable, termination, disk chassis or even a bad controller. Mon, 16 Apr 2007 06:09:34 GMT https://community.hpe.com/t5/disk-enclosures/4si-raid/m-p/3981985#M23480 Torsten. 2007-04-16T06:09:34Z