https://community.hpe.com/t5/disk-enclosures/to-cache-or-not/m-p/3633215#M17772 Hi Gary,<BR /><BR />the 6i controller already has 64MB of read cache. You can get a 128MB Battery Backed Write Cache enabler option for the 6i, which will enable the 6i to do write-caching as well, and give you 192MB total cache memory.<BR />The 6400 controllers can take more cache (up to 256MB), but do you really need that much for internal disks?<BR />You can also hang an MSA30 on the external SCSI port of the DL380 which would also be controlled by the 6i.<BR /><BR />Regards,<BR />Stephen Fri, 23 Sep 2005 05:52:14 GMT Stephen Kebbell 2005-09-23T05:52:14Z https://community.hpe.com/t5/disk-enclosures/to-cache-or-not/m-p/3633214#M17771 I buy DL380's and always put a 6402 controller in and turn on caching.<BR />Is there still need to use a caching controller, can i just put more ram in the server ?<BR /><BR />Does anyone know of any good resources that will tell me why i need a caching controller appossed to a non-caching controller. Or why i should not just use the 6i on-board controller.<BR /><BR />Any advice appreciated.<BR />Gary Fri, 23 Sep 2005 04:09:22 GMT https://community.hpe.com/t5/disk-enclosures/to-cache-or-not/m-p/3633214#M17771 Gary Sawyer 2005-09-23T04:09:22Z https://community.hpe.com/t5/disk-enclosures/to-cache-or-not/m-p/3633215#M17772 Hi Gary,<BR /><BR />the 6i controller already has 64MB of read cache. You can get a 128MB Battery Backed Write Cache enabler option for the 6i, which will enable the 6i to do write-caching as well, and give you 192MB total cache memory.<BR />The 6400 controllers can take more cache (up to 256MB), but do you really need that much for internal disks?<BR />You can also hang an MSA30 on the external SCSI port of the DL380 which would also be controlled by the 6i.<BR /><BR />Regards,<BR />Stephen Fri, 23 Sep 2005 05:52:14 GMT https://community.hpe.com/t5/disk-enclosures/to-cache-or-not/m-p/3633215#M17772 Stephen Kebbell 2005-09-23T05:52:14Z