https://community.hpe.com/t5/disk/hp-surestore-2000s-c2490/m-p/2899994#M3391 C2490 followed by letters A or S and without any following letters are SE drives, followed by letters D or W are differential drives<BR />Eugeny Tue, 11 Feb 2003 21:07:06 GMT Eugeny Brychkov 2003-02-11T21:07:06Z https://community.hpe.com/t5/disk/hp-surestore-2000s-c2490/m-p/2899992#M3389 I have an opportunity to buy several C2490A HD's. Are these drives differential?<BR />Thanks Fri, 07 Feb 2003 23:39:04 GMT https://community.hpe.com/t5/disk/hp-surestore-2000s-c2490/m-p/2899992#M3389 Dennis Smerechniak 2003-02-07T23:39:04Z https://community.hpe.com/t5/disk/hp-surestore-2000s-c2490/m-p/2899993#M3390 A C2490 disk is 2 GB SE alternate part number A3087A Tue, 11 Feb 2003 20:45:13 GMT https://community.hpe.com/t5/disk/hp-surestore-2000s-c2490/m-p/2899993#M3390 Iain F. Brown 2003-02-11T20:45:13Z https://community.hpe.com/t5/disk/hp-surestore-2000s-c2490/m-p/2899994#M3391 C2490 followed by letters A or S and without any following letters are SE drives, followed by letters D or W are differential drives<BR />Eugeny Tue, 11 Feb 2003 21:07:06 GMT https://community.hpe.com/t5/disk/hp-surestore-2000s-c2490/m-p/2899994#M3391 Eugeny Brychkov 2003-02-11T21:07:06Z