The City of New York Department of Housing Preservation and Development

1. The City of New York Department of Housing Preservation and Development Storage Trends at HPD SHAUN DONOVAN, Commissioner CARY B. PESKIN, Associate Commissioner / Chief Information Officer

2. HPD’s Mission… Using a variety of preservation, development and enforcement strategies, HPD strives to improve the availability, affordability and quality of housing in New York City. As the nation's largest municipal housing agency, HPD works with private, public and community partners to strengthen neighborhoods and enable more New Yorkers to become homeowners or to rent well-maintained, affordable housing.

3. Storage Chronology 2000 - 2001 Traditional silo environment comprised of a cluster of servers 2002 Need for consolidation 2003 Introduction of EMC Symmetrix SAN/NAS EMC SAN supporting Oracle and Exchange Celerra NAS supporting local storage needs Introduction of Centera CAS, a low cost, effective form of storage 2005 Upgrade from Symmetrix to DMX1000 for improved performance and reliability 2006 – 2007 Currently using DoITT as a DR site. Centera replication already in progress. Celera and DMX replication to follow in FY07/FY08.

4. 2000 - 2001 Traditional silo environment comprised of a cluster of servers HPD launched its enterprise-wide application, HPDInfo, in 1999 which started the trend for faster, larger and more reliable storage.

5. 2002 A need for consolidation Over the years data collection increased. Calls from HPD’s Central Complaint Bureau (311) were climbing quickly and exceeded 500,000 calls per year with one-day spikes at more than 8,000 calls. With data center maintenance and ever-increasing data storage requirements it became apparent that a shift from stand alone servers to a state-of-the-art large-scale Storage Area Network (SAN) was needed.

6. 2003 The introduction of a SAN/NAS HPD evaluated a number of different storage solutions and selected a multi-terabyte configuration from EMC. The SAN storage was configured to support our Oracle and Exchange environments. Since HPD does not permit access to the “C” drive for the majority of users, the Celerra NAS was configured to provide local storage for its 2,500+ users.

7. 2004 The introduction of Centera Content Addressable Storage (CAS) A Filenet document imaging system was introduced for scanned materials as well as the everyday use of digital cameras for recording building conditions. Adding to the demand for storage was HPD’s GIS environment with its storage demands and ortho imagery. In response a low cost, effective form of storage was introduced. EMC uses a proprietary interface for its CAS which is built on very inexpensive yet reliable IDE storage technology.

8. 2005 The need for improved performance and reliability HPD’s data and performance demands kept increasing with the additions of Internet based applications and a growing number of users. To keep pace with demand, HPD upgraded its server environment to 64 bit server technology running Windows 2000/3 Enterprise and upgraded its SAN to an EMC DMX1000. The DMX1000 provides a significant increase in performance, reliability and capacity and set the stage for our disaster recovery strategy.

9. 2006 - 2007 Disaster Recovery (DR) A storage network solution built around an EMC DMX1000 provides a mirrored SAN and NAS resource. An EMC Centera provides a CAS resource for images linked to the Agency’s main business application. In all, seven and a half terabytes is supported. All data assets, except static, are protected by daily, weekly, and monthly polices for automated backup to a tape library. For the static data, a secondary Centera is maintained at HPD’s new DR site at 11 Metrotech, and is synchronized with the primary Centera throughout the day. The replication link is through the DoITT CityNet. DMX1000 and Celera replication will follow over the next year.

10. Thank you Contact Information Cary B. Peskin Associate Commissioner/CIO 212 863-6140 peskinc@hpd.nyc.gov