**** PLEASE EMAIL OR CALL FOR ALL NEW OR REFURBISHED QUOTES ****
**** SPEC SHEET IS AT BOTTOM OF PAGE IN PDF FORMAT ****
The IBM 2105 Model F10 has single phase power and 420 GB to 1.7 TB approximate end-user capacity in addition to increased scalability throughput and performance.
Highlights
Support for one or more of the major server platforms including UNIX Windows NT S/390 AS/400 and NetWare
Model Highlights 2105-F10
The IBM Enterprise Storage Server is your ideal SAN solution.
Supports the intermix of FICON ESCON Fibre Channel and SCSI attachments making the ESS a natural fit for storage and server consolidation requirements
Increased performance and scalability with models with 8 GB 16 GB 24 GB or 32 GB of cache
Seven - 7 standard capacity configurations
Concurrent support for all your major server platforms including OS/390 OS/400 Windows NT Windows 2000 NetWare and many varieties of UNIX
Extensive storage management capabilities including
FlashCopy for fast data duplication
Advanced Remote Copy Services for your synchronous and asynchronous backup and disaster recovery needs
Extensive StorWatch - TM management capability through the Web
Superior performance with options and innovations to meet your changing requirements
High availability to support your e-business and other mission-critical applications
Description
e-business continues to drive storage at an ever-increasing rate. e-commerce applications are deployed on heterogeneous servers and require high-function high-performance and scalable storage servers to meet the demanding requirements of Enterprise Resource Planning and Business Intelligence applications. The IBM Enterprise Storage Server has set new standards in function performance and scalability in these most challenging environments and is now enhanced to provide
Direct connection to Storage Area Networks - SANs
Advanced storage management functions which provide fast data duplication and high-performance backup and disaster recovery capability.
These Models Increase Scalability Throughput and Performance
The Enterprise Storage Server Models F10 and F20 provide significantly improved levels of performance thruput and scalability while continuing to exploit performance innovations introduced with the Models E10 and E20 such as Parallel Access Volumes Multiple Allegiance and I/O Priority Queueing. Additional PCI buses faster state-of-the-art IBM RISC microprocessors plus up to 32 GB of cache memory all combine to provide unprecedented levels of performance and thruput. The increased bandwidth capabilities of the Models F10 and F20 allow for up to 100% greater thruput for sequential workloads or 25% greater thruput for database workloads. This allows customers to install 25-100% larger configurations in the Model F20 than were previously possible with the Model E20 depending on access density and the nature of the workload while maintaining industry leading performance. With these capabilities the ESS is perfectly suited to enable you to take advantage of the promise of SAN while protecting the significant investments you have already made in storage and I/T infrastructures.
FICON Extends the Performance Benefits of the Enterprise Storage\Server - ESS
The ESS Models F10 and F20 support native FICON connection over short-wave or long-wave fibre links to provide FICON attachment to IBM e - logo server zSeries or S/390 servers. This support is provided via the Fibre Channel/FICON Host Adapters - #3021 and #3023 .
The most obvious benefits of FICON connectivity are increased per channel bandwidth and greater simplicity of channel fabric. This speed allows customers to collapse existing ESCON channels into FICON channels at the rate of approximately 4 1 or in some cases more if ESCON channel utilizations are relatively low. So a well-configured ESS will typically need no more than eight FICON channel interfaces in order to exploit the bandwidth.
Greater simplicity of configuration is achieved because the FICON architecture allows more devices per channel - up to 16 384 and more Logical Subsystems - LSS per channel to match the increased channel bandwidth. Single stream sequential operations may experience a significant improvement in thruput - as much as 2X so that elapsed times for key batch data mining or dump operations will substantially improve. This can help provide relief for customers whose batch or file maintenance windows are constrained today.
Response time improvements may accrue for some customers particularly for data stored using larger blocksizes. The data transfer portion of response time is greatly reduced because the data rate during transfer is more than five times faster than ESCON. This improvement can lead to significant connect time reduction. The larger the transfer the greater the reduction as a percentage of the total I/O service time. Pend time caused by director port busy are reduced or eliminated because collisions in the director are reduced or eliminated with FICON architecture. For customers whose ESCON directors are experiencing as much as 45-50% busy conditions this will provide significant response time reduction.
With the advent of the ESS IBM introduced one of the most important advances in disk system architecture since cache -- Parallel Access Volumes - PAV . Simply stated PAV allows multiple concurrent I/Os to the same volume at the same time. Complementing this ability FICON channels can process multiple concurrent data transfers whereas ESCON channels process only one operation at a time. The maximum bandwidth of an individual RAID array within the ESS is approximately 45 MB/sec but the maximum bandwidth of an ESCON channel is only 17 MB/sec hence a single ESCON channel cannot exploit the maximum ability of the ESS arrays. PAV and FICON work together to allow multiple data transfers to the same volume at the same time over the same channel providing greater parallelism and greater bandwidth while simplifying configurations.
Another performance advantage offered by FICON is that the ESS accepts multiple channel command words - CCWs concurrently without waiting for completion of the previous CCW. This allows setup and execution of multiple CCWs from a single channel to happen concurrently. Moreover I/O priority queueing is now handled at a higher point in the ESS system. Contention among multiple I/Os accessing the same data is now handled in the FICON host adapter and queued according to the I/O priority indicated by the Workload Manager.
Finally significant performance advantages can be realized by those customers who access their disk subsystems remotely. FICON reduces or eliminates data rate droop for distances up to 100 km for both read and write operations by using enhanced data buffering and pacing schemes.
FICON thus extends the ESS ability to deliver high bandwidth potential to the logical volumes needing it when they need it. Older technologies are limited by the bandwidth of a single disk drive or a single ESCON channel but FICON RAID-5 and PAVs working together provide a high-speed pipe with multiplexed operation all the way down to users data.
Storage Area Network - SAN Connectivity and Functions
Serial Fibre Channel technology is rapidly replacing parallel SCSI channel attachment between open system - non-S/390 servers and disk and tape storage systems. The IBM ESS employs industry-standard Fibre Channel attachment to a wide variety of Intel-based servers running Windows NT Windows 2000 or Novell NetWare iSeries and AS/400 servers running OS/400 and UNIX servers from IBM Sun Microsystems and Hewlett-Packard. It also enables direct attachment to Storage Area Network components. The IBM Enterprise SAN is a high-speed switch fabric of centrally managed multivendor heterogeneous servers and storage systems. A SAN can help companies derive greater value from their business information by enabling IT resource management and information sharing any time anywhere across the enterprise.
ESS connectivity thru native Fibre Channel technology offers many performance advantages over parallel SCSI channel technology. Each Fibre Channel Host Adapter supports 100 MB/second full duplex data transfer over short wave fibre links. Fibre Channel technology is the ideal enabler for server and storage consolidation. It also expands connectivity options enabling hundreds of server and storage connections in a switched fabric network. This additional addressing capability supports large and growing storage consolidation and data sharing requirements.
Fibre Channel technology enables enterprises to increase distances between servers and storage devices from the 25 meter maximum imposed by SCSI connections up to 500 meters. This enhancement removes a significant constraint to configuration of large numbers of servers and storage devices and offers new configuration possibilities. When used SAN fabric components the ESS can be connected to servers over 10 kilometers away from the storage system. Extended distance capability is ideally suited to disaster recovery implementations such as remote disk mirroring. The interconnection of switches or hubs creates a switch fabric containing hundreds of Fibre Channel ports. This fabric provides the high performance scalability and fault tolerance required by the most demanding e-business applications and enterprise storage management applications.
Fibre Channel connectivity also demonstrates the flexibility adaptability and extensibility of IBM s Seascape Architecture. Such connectivity offers the potential for the ESS to fully participate in the many benefits anticipated as SAN technology matures including disk pooling LAN-less and server-less backup SAN-based remote copy enhanced configuration flexibility and improved availability. Complete and current information on all supported Fibre Channel attachments including SAN fabric components is available the Web at
http //www.storage.ibm.com/hardsoft/products/ess/supserver
LUN Masking
The ESS provides LUN Masking enabling you to control which servers can access which logical units or devices.
IBM Subsystem Device Driver
The IBM Subsystem Device Driver - SDD provides load balancing and enhanced data availability capability in configurations with more than one I/O path between the host server and the ESS. Load balancing can eliminate I/O bottlenecks that occur when many I/O operations are directed to common devices via the same I/O path. SDD also eliminates a potential single point of failure by automatically rerouting I/O operations when a path failure occurs thereby providing enhanced data availability capability.
SDD is provided with the ESS at no additional charge. Both SCSI and Fibre Channel - SCSI [PDF SPEC SHEET]
