EMC has upgraded and expanded its Clariion range of storage arrays.

Their internal architecture have been overhauled, bumping up capacity and adding higher-end functions including data migration both inside and outside the box. And the company also released four new models in its Clariion disk library line, used for backup to disk.

EMC said its existing Clariion CX300-s, CX500-s and CX700-s models now include new UltraPoint hardware and software technology that combines point-to-point connectivity to individual disk drives with advanced diagnostics. Clariion's internal disk drives had been connected to its dual controllers via an arbitrated loop architecture, which in the past could be a bottleneck for I/O.

"As the drives have evolved and grown in capacity, there are new failure modes that have cropped up where a drive can interfere with its neighbour on the loop," said Barry Ader, senior director of Clariion marketing.

EMC said it has also added virtual LUN technology to the Clariion line, allowing users to move data volumes within the array system between Fibre Channel or ATA disks without disrupting applications.

The company has also upgraded its SANCopy software to allow the Clariion arrays to copy data from one system to another. The application supports copies to other Clariions and Symmetrix arrays, as well as to arrays from IBM, HP, Sun and HDS. And it has upgraded its Flare operating system with new drive-level fault detection, isolation and diagnosis capabilities.

Hitachi Data Systems recently upgraded its modular disk line. The AMS200 is positioned by HDS against the Clariion 300, although it can hold up to 40TB of data, the same area as the CX500's 38TB. The AMS500 is roughly in the CX700 area as it holds up to 88TB of data against the CX700's 76TB. These arrays can mix and match Fibre Channel and SATA drives like the Clariions.

Disk libraries and protection
The four new Clariion disk library models offer more than twice the capacity of previous products. The DL310 offers a maximum 37.5TB, and the DL710 now offers up to 174TB. EMC also introduced dual engine models of its libraries for fail-over capabilities.

EMC has also upgraded its SnapView and MirrorView replication applications to support twice as many LUN transfers, from 100 to 200 replicas at a time. EMC's entry-level AX100 array also received an upgrade with SAN Copy/E, which allows data replication to larger CX series storage systems.

Ader said the new software allows the movement of data from remote offices to core data centres for centralised backup, recovery and reporting over a WAN. The AX100 can also support EMC's Navisphere Manager, which allows systems administrators to centrally manage both AX100 systems and CX Series systems from a single, Web-based management console.