https://community.hpe.com/t5/disk-enclosures/a3312a/m-p/2634386#M3663 Merely, A3312A is just bunch of disks and AutoRAID 12H is a disk array.<BR /><BR />The key features of A3312A are,<BR /><BR />?? Dual wide SCSI bus, either single-ended or fast/wide differential<BR />?? Two redundant fan modules (shipped standard)<BR />?? Two redundant power modules (one shipped, one optional)<BR />?? Up to eight 1-inch-high, or four 1.6-inch-high slots<BR /><BR />High Availability<BR />The storage systems are optimized for high availability with the following features:<BR />?? Dual SCSI bus<BR />?? Hot pluggable, front-accessible modules<BR />?? Redundant fan and power modules<BR />?? Can mirror disks in the same storage system<BR />?? Can be integrated with mirrored disks in an HP-UX environment with MC/LockManager and<BR />ServiceGuard<BR /><BR />On the other hands, HP AutoRAID 12H has,<BR /><BR />-Redundant controllers - Reduce or eliminate downtime caused by failed controller equipment. <BR />-Hot-pluggable components - Allow repairs with minimum interruption to currently running applications. <BR />-Active/active controllers - Provide hot fail-over, keeping your data safe and available. <BR />-Each controller in the array has visibility to all data on all disks. If a controller fails, the other one can take over operation of the array with no loss of data and without rebooting the system or restarting applications. <BR />-Support for mirrored cache - Keeps a complete copy of all cached data on both controllers. If a controller or a controller cache fails, operations continue using the working cache and controller. <BR />-Dual batteries in each controller - Allow failure of up to three of the four batteries in a controller pair with no resulting downtime. <BR />-Online Capacity upgrades<BR />-Automatic migration of data from RAID 0/1 to RAID 5 storage <BR />-Support for HP-UX and NT<BR />-Ability to mix and match disk drive capacities and speeds<BR /><BR />Hope this helps,<BR /> Fri, 21 Dec 2001 10:01:30 GMT Insu Kim 2001-12-21T10:01:30Z https://community.hpe.com/t5/disk-enclosures/a3312a/m-p/2634384#M3661 Our company plan to buy a storage equipment A3312A,<BR />I want to know what's the difference between this model and autoraid 12h? Fri, 21 Dec 2001 00:51:52 GMT https://community.hpe.com/t5/disk-enclosures/a3312a/m-p/2634384#M3661 linda_9 2001-12-21T00:51:52Z https://community.hpe.com/t5/disk-enclosures/a3312a/m-p/2634385#M3662 Hi,<BR /><BR />The information you are looking for can be found in this link.<BR /><BR /><A href="http://www.hp.com/cposupport/information_storage/support_doc/lpg67075.html" target="_blank">http://www.hp.com/cposupport/information_storage/support_doc/lpg67075.html</A><BR /><BR />HTH<BR />-Michael<BR /> Fri, 21 Dec 2001 03:14:55 GMT https://community.hpe.com/t5/disk-enclosures/a3312a/m-p/2634385#M3662 Michael Tully 2001-12-21T03:14:55Z https://community.hpe.com/t5/disk-enclosures/a3312a/m-p/2634386#M3663 Merely, A3312A is just bunch of disks and AutoRAID 12H is a disk array.<BR /><BR />The key features of A3312A are,<BR /><BR />?? Dual wide SCSI bus, either single-ended or fast/wide differential<BR />?? Two redundant fan modules (shipped standard)<BR />?? Two redundant power modules (one shipped, one optional)<BR />?? Up to eight 1-inch-high, or four 1.6-inch-high slots<BR /><BR />High Availability<BR />The storage systems are optimized for high availability with the following features:<BR />?? Dual SCSI bus<BR />?? Hot pluggable, front-accessible modules<BR />?? Redundant fan and power modules<BR />?? Can mirror disks in the same storage system<BR />?? Can be integrated with mirrored disks in an HP-UX environment with MC/LockManager and<BR />ServiceGuard<BR /><BR />On the other hands, HP AutoRAID 12H has,<BR /><BR />-Redundant controllers - Reduce or eliminate downtime caused by failed controller equipment. <BR />-Hot-pluggable components - Allow repairs with minimum interruption to currently running applications. <BR />-Active/active controllers - Provide hot fail-over, keeping your data safe and available. <BR />-Each controller in the array has visibility to all data on all disks. If a controller fails, the other one can take over operation of the array with no loss of data and without rebooting the system or restarting applications. <BR />-Support for mirrored cache - Keeps a complete copy of all cached data on both controllers. If a controller or a controller cache fails, operations continue using the working cache and controller. <BR />-Dual batteries in each controller - Allow failure of up to three of the four batteries in a controller pair with no resulting downtime. <BR />-Online Capacity upgrades<BR />-Automatic migration of data from RAID 0/1 to RAID 5 storage <BR />-Support for HP-UX and NT<BR />-Ability to mix and match disk drive capacities and speeds<BR /><BR />Hope this helps,<BR /> Fri, 21 Dec 2001 10:01:30 GMT https://community.hpe.com/t5/disk-enclosures/a3312a/m-p/2634386#M3663 Insu Kim 2001-12-21T10:01:30Z