https://community.hpe.com/t5/disk-enclosures/disk-compatibilities-k-class-and-dl/m-p/3605623#M17249 Hi Doris, assuming you talking about the ProLiant DL servers, no, they are not compatible drives and they will not work internally in the K class servers. The ProLiant DL drives are Ultra320 80-pin and they run at 10k or 15k rpm. The K class drives run at 7200 RPM and have a 68-pin FWD SCSI-2 interface. <BR /><BR />Hope this helps.<BR /><BR />Jesse<BR />Cypress tech Wed, 17 Aug 2005 09:47:28 GMT Jesse Dougherty 2005-08-17T09:47:28Z https://community.hpe.com/t5/disk-enclosures/disk-compatibilities-k-class-and-dl/m-p/3605622#M17248 We have 30 disks that were pulled from the DLs and want to know if we can re-use them in a K580. I believe they are 36 and 18gb disks but I am unsure as no site survey has been done yet but just want to know any gotchas to watch for with compatibility between the KClass and the DLs; or if there will be any driver or controller concerns. Thanks. Wed, 17 Aug 2005 09:15:34 GMT https://community.hpe.com/t5/disk-enclosures/disk-compatibilities-k-class-and-dl/m-p/3605622#M17248 doris grady 2005-08-17T09:15:34Z https://community.hpe.com/t5/disk-enclosures/disk-compatibilities-k-class-and-dl/m-p/3605623#M17249 Hi Doris, assuming you talking about the ProLiant DL servers, no, they are not compatible drives and they will not work internally in the K class servers. The ProLiant DL drives are Ultra320 80-pin and they run at 10k or 15k rpm. The K class drives run at 7200 RPM and have a 68-pin FWD SCSI-2 interface. <BR /><BR />Hope this helps.<BR /><BR />Jesse<BR />Cypress tech Wed, 17 Aug 2005 09:47:28 GMT https://community.hpe.com/t5/disk-enclosures/disk-compatibilities-k-class-and-dl/m-p/3605623#M17249 Jesse Dougherty 2005-08-17T09:47:28Z