Unlimited distances between primary and duplicate ESS (Enterprise Storage Server) 
storage arrays lower your risk in the event of a wide area disaster.

  Because WAN connections have no distance limitations, you can place your remote disk 
array where it makes best business sense, anywhere in your enterprise. Extending a disk 
mirroring application to an existing remote location saves money and resources by not 
utilizing an expensive disaster recovery center.

    You'll make the most of your bandwidth because CNT's UltraNet-architecture provides 
compression on T3/E3,ATM/OC-3 or 100 Mb Ethernet, and IBM's PPRC uses bandwidth 
efficiently.

    The UltraNet Storage Director provides connectivity via ATM,T3/E3 or IP networks to 
free you from distance limitations, whether you need to go across the state, or across 
the ocean. In addition, ATM interfaces provide access to universally available telco 
managed services.

    Maintain full operation during system upgrades, data center migrations and 
consolidations.

    Remote disk mirroring has a variety of possible uses in data protection, data 
replication, and data migration and, coupled with the right interconnect facilities, can 
help you make the most efficient use of your existing system and network resources.

    Disk mirroring provides a secure, current copy of your business information in a 
remote location so business can continue as usual in spite of scheduled or unplanned 
outages. Remote disk mirroring adds distance between your primary and secondary/backup 
data center sites, so that a disaster at the primary site is less likely to affect the 
backup site. 

    This application facilitates efficient use of your information throughout your 
enterprise. Multiple locations can access mirrored, up-to-date information locally for 
reporting or decision-making activities.

    Remote disk mirroring provides seamless data migration over unlimited distances to 
aid in data center consolidation.

    IBM's Peer-to-Peer Remote Copy (PPRC) is a hardware-based disaster recovery and 
workload migration solution designed for those companies that need their backup disk 
array to always be current with the primary disk. Synchronous PPRC "shadows" data as 
application updates occur, ensuring that business data is always available, up-to-date, 
and secure at theremote site. PPRC works within and between the ESS arrays and is 
controller-based. So it is not necessary to have a server or application at the remote 
site.This increases the flexibility of how and where the application can be implemented. 
As an alternative implementation, Flashcopy works in conjunction with PPRC to support 
fast duplication and minimize the impact of backups on the source applications. Flashcopy 
creates time-consistent copies that are then  transmitted to the remote site using 
PPRC.The local copy occurs at very high speed, resulting in minimal impact to the 
source application. Because the copy to the remote site occurs as a background operation, 
bandwidth usage is trimmed dramatically.This meets requirements for 100 percent uptime 
with high data integrity, while lowering bandwidth costs.This can be a highly effective 
disk mirroring scenario when bandwidth costs are a significant constraint, and the 
application can support a minor lag in data currency.

    You may ask, can these requirements still be met when extended distances come into 
play? What if the branch office you'll like to use as a recovery site is located on the 
other side of the country, or the globe? The CNT UltraNet Storage Director ensures 
optimal data integrity, availability, and performance of storage applications like PPRC 
disk mirroring, over any distance 0 miles or 1,000s of miles. The UltraNet Storage 
Director is a high-speed switching platform that interconnects host-to-storage and 
storage-to-storage systems across local, metro, and wide area networks. UltraNet products 
let you implement very high performance and high capacity storage networks while 
leveraging the channel and networking technologies you already have in place.They connect 
to all sorts of wide-area bandwidth services(dedicated, shared, and switched) including 
T1/E1,T3/E3,ATM,and Ethernet, over all major data protocols, such as SCSI, Fibre Channel, 
and ESCON.A cohesive suite of networking features such as data compression,alternate 
pathing, load leveling, and error detection and recovery all further maximize the use 
of available communications bandwidth, enhance system performance, and ensure data 
availability. 

    In this remote disk mirroring implementation, the two IBM disk arrays can be placed 
in separate locations, separated by any distance using ATM connections, dedicated T3/E3 
lines, or an IP network service.The controller-based disk mirroring implementation is 
controlled by IBM PPRC software, while the CNT UltraNet Storage Directors manage needed 
protocol conversions and the long-distance data transmission and control process.

    Beyond the seamless product integration, the IBM and CNT partnership goes even 
further to help you leverage your existing resources into a comprehensive storage 
architecture. CNT and IBM cooperate on a variety of ongoing joint development and 
interoperability testing initiatives.This remote disk mirroring solution is geared not 
only to moderating the risks involved with business disruptions but also allowing 
traditionally disruptive non-production tasks, such as backups, maintenance, and testing, 
to co-exist efficiently and non-disruptively with critical revenue-generating business 
operations. CNT can build multi-site networks with any-to-any connectivity between 
multiple IBM storage systems, making them more robust, fault tolerant, and
high-performing. CNT provides unprecedented connectivity, flexibility, and performance 
for IBM's Enterprise Storage Server and PPRC. In addition, with our networking knowledge 
and experience, we can accelerate your diskmirroring implementation and increase the 
project success rate and overall quality. Businesses around the world trust CNT for help 
in designing and integrating high-performing, cost-effective data replication solutions 
that drive business results.

    This solution configuration has been fully tested by IBM laboratories, and is 
available for immediate sale and delivery around the world.

  -- IBM Enterprise Storage Server (ESS) Disk Array (2)
  -- IBM Peer-to-Peer Remote Copy (PPRC) software
  -- CNT UltraNet Storage Directors (2)
  -- T3/E3,ATM/OC-3 or IP wide area connections
  -- CNT CMF SNMP-compliant network management software
  -- CNT data replication consulting
  -- CNT consulting, integration, bandwidth and network management services