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INFORTREND AND LSI LOGIC SUPPORT LARGE RAID VOLUMES
First External RAID Support for Storage Arrays Greater than 2TB
SANTA CLARA, Calif., October 6, 2004 - XRAID storage expert Infortrend today announced that, utilizing an LSI
Logic host bus adapter (HBA), it has become the first external RAID storage vendor to provide support for storage
arrays with up to 64 terabytes (TB) capacity. This innovation capitalizes on the new 16-byte SCSI commands, which
enable breaking the traditional 2TB industry limit. High capacity arrays are ideal for simplified volume management and
applications involving large reference data files such as medical images.
“Taken together, Infortrend and LSI Logic have introduced the first native support for a volume size up to 64TB as a
single LUN. This allows for greater economies of scale well beyond the typical 2TB SCSI limitation,” said Tony Asaro,
senior analyst, Enterprise Strategy Group. “Typically storage systems require multiple arrays to manage this much
storage. By supporting up to 64TB as a single LUN, Infortrend is driving down storage total cost of ownership for its
customers.”
Simplified volume management has taken on particular importance as high-capacity SATA RAID arrays can now
contain up to 6TB in one enclosure. Subdividing each enclosure into multiple partitions can be inefficient and present
difficulties in storage management. Using standard format 512-byte disk blocks, Infortrend's latest firmware supports the
new 16-byte SCSI command variations such as READ(16) and WRITE(16), which allow for 16-byte Command
Descriptor Blocks (CDB), resulting in the ability to address greater than 2TB of storage and present it as a single Logical
Unit Number (LUN).
“The 2TB limit has long been a barrier to efficient storage provisioning. However, by leveraging the Linux 2.6 kernel
and the EonStor™ RAID with LSI Logic HBA combination, we can create single file systems well over 2TB,” stated
Erik Logan, CTO at Pogo Linux. “This provides a valuable solution for higher end markets that require a large
contiguous storage area.”
“As high-capacity SATA enclosures become increasingly common, and with the advent of 64-bit operating systems, the
ability to support new 16-byte SCSI commands delivers a distinct advantage for users in terms of efficiency and
simplicity,” said Thomas Bayens, director of marketing at Infortrend. “This is especially important for the vast amount
of reference data being made available for nearline applications.”
Infortrend has demonstrated this capability with an EonStor SATA subsystem directly attached to LSI Logic's