The flagship backup solution boasts up to 240TB of raw, VTL- and NAS-accessible disk space, all wrapped in a management GUI that speeds implementation and eases backup administration burdens.
The DXi7500, Quantum's flagship disk-based backup and data deduplication
solution, offers a robust feature set and high-quality construction and
architecture for the enterprise disk backup market.
With solid throughput and deduplication
performance, the DXi7500 can serve as the centerpiece of an enterprise's VTL
(virtual tape library)- or NAS (network-attached storage)-based disk backup
infrastructure. What's more, the product's management platform, Quantum Vision
and StorageCare Guardian, allows administration of many DXi-Series boxes,
including support for replicating deduped backups across WAN links-a valuable
service in any disaster recovery and business continuity plan.
Designed expressly for backup and archive operations, the DXi7500 offers
both VTL and NAS presentations. In addition, the direct tape creation capability
writes physical media over dedicated Fibre Channel links and is compatible with
backup applications' direct tape creation protocols.
Support for backup software is excellent-it's hard to think of a backup
console, OS, application and agent combination that isn't supported. Likewise,
support for a variety of tape drive and tape media emulation types is
For instance, organizations that have implemented complex backup and
retention policies through backup software such as Symantec NetBackUp can
easily remap these jobs onto the newly created VTL on the Dxi7500. This can
also be done through complete support of Symantec's OpenStorage API,
which can be especially helpful when backing up multiple locations.
The heart of the DXi7500, and of all Quantum's products, is the proprietary
file system, StorNext. StorNext is a shared disk file system that can be
installed on disk arrays in a SAN and is
compatible with many client and server operating systems. StorNext is typically
used in high-performance storage environments where large files must be shared
by many users.
In addition, the DXi7500's flexibility regarding deduplication is a key
differentiator. The product can function as a VTL (up to 64 libraries with 160
virtual drives) and/or a CIFS (Common Internet File System) or NFS
(Network File System) NAS. Deduplication is based on per-volume policies and
can take place inline (which optimizes for capacity), post-processed (which
optimizes for performance), both or neither.
The available combinations of inline and post processing deduplication
methods can allow administrators to optimize storage environments to meet the
needs of their applications, data and backup/retention policies.
The system, which is designed for use in an enterprise data center, ships as
a single full-size four-post rack in its base configuration of 24TB (raw
capacity) and scales up in 12TB chunks to a whopping 240TB in two full racks.
Typically, each unit arrives preconfigured with a head or node that is
basically a fault-tolerant server running the DXi software and equipped with
dual array modules, a 4G-bps Fibre Channel switch and a 1G-bps Ethernet switch.
Each component includes hot-swappable redundant power supplies and fans.
Each single array module houses dual hot-swappable Fibre Channel system
controllers (active/active) and dual RAID controllers (active/active) with
battery-backed-up cache connected to 16 hot-swappable 750GB SATA (soon to be
upgraded to 1TB) drives.
Drives are typically configured with a global hot spare-for RAID 5 there are
three groups of 4+1 drives and for RAID 6 there is a group of 6+2 and a group
of 5+2 drives. Each system can house up to four array modules, and each array
module in turn connects up to four expansion modules.
Matthew D. Sarrel, CISSP, is a network security,product development, and technical marketingconsultant based in New York City. He is also a gamereviewer and technical writer. To read his opinions on games please browse http://games.mattsarrel.com and for more general information on Matt, please see http://www.mattsarrel.com.