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Online trading requires a high-performance infrastructure that can process massive amounts of data in real time. However, the day-today operation of the system is not the only concern storage issues are also important because of (1) the voluminous amount of data generated by online transactions and (2) the data generated for datawarehousing purposes demand a robust, highly available solution. A.B. Watley Group, Inc., turned to Sun Microsystems when it was ready to streamline its infrastructure and storage setup. The company is the parent of A.B. Watley, Inc., a technology- and serviceoriented brokerage firm that offers proprietary online trading systems such as UltimateTrader and WatleyTrader. The firm began an across-the-board swap transition from Microsoft Windows NT to Sun in late 1998. According to Eric LeSatz, vice president of IT administration, the switch to Sun has translated to better availability and scalability and less maintenance over the long haul. We decided to revamp the entire trading system and go with a UNIX system, says LeSatz. At the time, we were testing EMC, and we decided to bring Sun in to compare. High performance capacity, reliability, and scalability were crucial determinants in evaluating hardware that could meet the company s transactional and storage needs. The storage system takes each stock trade and inserts it into an Oracle database in real time. The system has to keep up with the demand or trades get dropped and data are no longer accurate. A.B. Watley Group s trading infrastructure is built to handle the market fluctuations that occur daily. At market open, we experience high volumes of quote and trade data, says LeSatz. We also need to be prepared for major events such as interest-rate adjustments. The entire architecture was designed to support these peak-level data rates.
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Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright 2004 The McGraw-Hill Companies. All rights reserved. Any use is subject to the Terms of Use as given at the website.
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The new system is currently storing approximately 2 TB of data on Sun StorEdge T3 arrays, with two-thirds of that devoted to data warehousing and one-third devoted to Online Transaction Protocol (OLTP). Each T3 array features a large built-in cache that minimizes input/output (I/O) response times so that requests and verifications of trades can be handled almost instantly. The company rewrote the client side of its proprietary applications in Java so that it could offer multiplatform support to clients based in Microsoft Windows, Macintosh, Linux, and Solaris. The T3 is part of Sun s StorEdge family of network storage arrays that offer scalable high-availability storage solutions for all levels of business environments with systems ranging from 162 GB to 88 TB. The T3 array that A.B. Watley is using includes
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Two controller units in a partner-pair configuration, with two mirror-cache redundant array of independent disks (RAID) controllers linked together in path fail-over fashion Two enclosures Four hot-swappable redundant PCUs and UICs Two unit interconnect cables Eighteen hot-swappable RAID-ready dual-ported bidirectional Fibre Channel drives Two hot-swappable redundant RAID controller cards with 256 MB of mirrored cache External connections that enable the array to be connected to a data host and a management network
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The T3 also features StorEdge Component Manager software, which provides a user-friendly graphic interface for easy monitoring and administration of the storage system, even remotely via Telnet and File Transfer Protocol (FTP). The unit supports IBM HACMP and Hewlett-Packard MC/Serviceguard HA clustering for high availability with A.B. Watley Group s mission-critical applications and storage.
Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright 2004 The McGraw-Hill Companies. All rights reserved. Any use is subject to the Terms of Use as given at the website.
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