Specifications

Escala Tower PL & S, E, T System Hardware
Chapter 3: External Storage and SAN Subsystems 4/116
9es3s1c3.doc
Rev 5.9
02/12/2003
5. EMC² SYMMETRIX FAMILY SUBSYSTEMS .................................................................. 63
5.1. Symmetrix Storage Philosophy ................................................................................................................................ 63
5.1.1. Highest Performance ........................................................................................................................................... 63
5.1.2. Scalability ............................................................................................................................................................ 63
5.1.3. Connectivity......................................................................................................................................................... 63
5.1.4. Information Protection......................................................................................................................................... 63
5.1.5. Information Sharing............................................................................................................................................. 64
5.1.6. Information Management .................................................................................................................................... 64
5.2. Symmetrix Product Description............................................................................................................................... 64
5.2.1. Host Channel Connection.................................................................................................................................... 64
5.2.2. Internal Data Flow ............................................................................................................................................... 65
5.2.3. Disk Drives .......................................................................................................................................................... 65
5.2.4. Disk Directors...................................................................................................................................................... 65
5.2.5. Symmetrix Data Protection.................................................................................................................................. 66
5.3. Symmetrix 3000 Family ............................................................................................................................................ 66
5.3.1. Symmetrix 3930-18/36 Architecture................................................................................................................... 66
5.3.2. Symmetrix 3830-18/36 Architecture................................................................................................................... 67
5.3.3. Symmetrix 3630-18/36 Architecture................................................................................................................... 67
5.3.4. Configuration Summary ...................................................................................................................................... 68
5.3.5. Ultra-SCSI Director............................................................................................................................................. 68
5.3.6. Fibre Channel Director ........................................................................................................................................ 68
5.3.7. ESCON Director.................................................................................................................................................. 68
5.3.8. SRDF Remote Link Director............................................................................................................................... 69
5.3.9. Cache Memory..................................................................................................................................................... 69
5.3.10. Disk Drives ........................................................................................................................................................ 69
5.4. Symmetrix 8000 Family ............................................................................................................................................ 70
5.4.1. Symmetrix 8730 and 8830-18/36/50/73/181 Architecture.................................................................................. 70
5.4.2. Symmetrix 8430 and 8530-18/36/50/73/181 Architecture.................................................................................. 70
5.4.3. Configuration Summary ...................................................................................................................................... 71
5.4.4. Ultra-SCSI Director............................................................................................................................................. 71
5.4.5. 4-Port Fibre Channel Director ............................................................................................................................. 71
5.4.6. Multi Mode Fibre Channel Director.................................................................................................................... 71
5.4.7. Multi Mode / Mono Mode Fibre Channel Director............................................................................................. 72
5.4.8. 4-Port ESCON Director....................................................................................................................................... 72
5.4.9. ESCON Director.................................................................................................................................................. 72
5.4.10. SRDF Remote Link Director............................................................................................................................. 72
5.4.11. Cache Memory................................................................................................................................................... 73
5.4.12. Disk Drives ........................................................................................................................................................ 73
6. STORAGE AREA NETWORK (SAN) INTRODUCTION .................................................. 74
6.1. Challenges and Risks................................................................................................................................................. 76
6.2. SAN Management...................................................................................................................................................... 76
6.3. The Design of a SAN Infrastructure........................................................................................................................ 77
6.3.1. Media Speed ........................................................................................................................................................ 77
6.3.2. Cabling................................................................................................................................................................. 77
6.3.3. Fibre Channel Networks...................................................................................................................................... 78
6.3.4. Zoning, Switched Loops, Mix of Private Loops and Fabrics.............................................................................. 82
6.3.5. Interconnection with Legacy Technologies......................................................................................................... 84