EMC Storage Product Knowledge Sharing

AX150 :-Dual storage processor enclosure with Fibre-Channel interface to host and SATA-2 disks. AX150i :-Dual storage processor enclosure with iSCSI interface to host and SATA-2 disks. AX100 :- Dual storage processor enclosure with Fibre-Channel interface to host and SATA-1 disks.AX100SCSingle storage processor enclosure with Fibre-Channel interface to host and SATA-1 disks.AX100iDual storage processor enclosure with iSCSI interface to host and SATA-1 disks.AX100SCiSingle storage processor enclosure with iSCSI interface to...

RAID 6 Protection RAID 6 was implemented to provide superior data protection, tolerating up to two drive failures in the same RAID group. Other RAID protection schemes, such as mirroring (RAID 1), RAID S, and RAID 5, protect a system from a single drive failure in a RAID group.RAID 6 provides this extra level of protection while keeping the same dollar cost per megabyte of usable storage as RAID 5 configurations. Although two parity drives are required for RAID 6, the same ratio of data to parity drives is consistent. For example,...

We have storage array product from different vendor. Everyone talkes about active-active and active-passive device technology. With different types of storage arrays and host connection types, it is important to understand the difference between active-active and active-passive devices. Here is short explanation of the differences:Active-active (for example, Symmetrix arrays)In an active-active storage system, if there are multiple interfaces to a logical device, they all provide equal access to the logical device. Active-active...