在一些對系統(tǒng)可靠性要求很高的應用中，DCS的設計需要考慮熱備份也就是系統(tǒng)冗余，這是指系統(tǒng)中一些關鍵模塊或網(wǎng)絡在設計上有一個或多個備份，當現(xiàn)在工作的部分出現(xiàn)問題時，系統(tǒng)可以通過特殊的軟件或硬件自動切換到備份上，從而保證了系統(tǒng)不間斷工作。通常設計的冗余方式包括：CPU冗余、網(wǎng)絡冗余、電源冗余。在極端情況下，一些系統(tǒng)會考慮全系統(tǒng)冗余，即還包括I/O冗余。

NEW Wheelock 24VDC 115/177 Ceiling Mount Horn/ Strobe 1

NEW Wheelock 24VDC, Ceiling Mount Fire Alerting Strobe?

NEW Wheelock NS-24MCW-FR 24VDC Horn-Strobe 15/30/75/110

NEW Wheelock Weather Proof, Strobe, Ceiling, 24 VDC, 11

NITTO OPTICAL Percision Grade Right Angle Prism, 25.4mm

Nova Systems Inc. NovaBlox Video Processing System Mode

NVIDIA P162 128MB AGP DVI/S-Video/VGA Video Graphics Ca

OCP TRP-03BC, OC-3/STM-1 SFP, 10-1308-10 1310nm SFP Tra

PowerWave Technologies MCA9107-50 MCA9000 Series Rack

PUREGAS MOBILE TOOL P440MW3 MANUAL REGENERATIVE DEHYDRA

Pyrex 250 mL Stopper Flask No. 6 4980

Qlogic FC5010409-60 D Network Adapter, 850nm

SMC Modular Type Air Filter AF20-N02C-2Z

Sony CCU-M3 Camera Control Unit

SONY External DVD + - RW/+ - R/CD Drive DRX-500ULX

Sun 270-4373-07 Gigabit Fiber Channel Network Card

Sunnex E214376 Type HS Halogen Lamp, Max 24/20 Watts

TDK Noise Filter ZAP2210-01, 250V AC, 1500V AC

Tektronix VX4363 32-Channel SPST Relay Switch
1746-A10

Teledyne CCR-33M80 COAX RELAY - 12VDC, SPDT, DC-18GHz

TELZON FRAME TERMINAL BLOCK 485-0000-041

TEXACRO 320290, 2" Pressure Sensitive Adhesive Loop, VE

Toshiba LTM08C351S 800*600 TFT LCD PANEL

Tyan Transport GT24, Dual Core AMD Opteron 2212 2Ghz, 4

Mitutoyo Vernier Caliper 6" Stainless Hardened

Zadian Talos Power Pod 40070-001 UDMA/33

T-Com 515A Option 1 DS1/PCM Simulator

HP AdvanceStack 28681A Bridge LB

Fujitsu F11B-0356-B901 ISDN

Ford TKIT-2005D1-F Box 3 of 4 Rotunda Essential Service

FORD SPECIAL TOOL T92P-1000-LMH/M?H VILLAGER ENGINE TOOL

FORD SERVICE SPECIAL TOOL SET T92P-1000-FLMH Missing T9

FORD ROTUNDA TKIT-2005U-M SERVICE TOOL SET GEAR Box 2 o

Tri Net Inc GR228X In Circuit Test Fixture Rebounder

FORD SERVICE SPECIAL TOOL SET T92P-1000-FLMH Missing T9

FORD ROTUNDA TKIT-2005U-M SERVICE TOOL SET GEAR Box 2 o

Tri Net Inc GR228X In Circuit Test Fixture Rebounder

Research Inc. Control Module 088598-001

Ransco Despatch 924-1-1-D-0 Oven - For Repair

Pelco DA104DT Video Distritubtion Amplifier (1 input, 4

Despatch Industries Model 924-I-I-D-0-120 Oven - For Re

FORD ROTUNDA OTC TKIT-1990-LMH/M?H ENGINE & DIFFERENTIAL

FORD ROTUNDA DIAGNOSTIC SERVICE TOOL SET T93P-1000-LM/M

Sun Microsystems 4-slot I/O Assembly 595-5380-01 With C

Sun Microsystems 370-6774-01 2GB Fiber Channel Expansio

Quantum TH8XG-BA DLT 8000 Loader Drive

Quantum DLT8000 LVD SE TH8AG DLT SCSI Backup Tape

NEWPORT 462 Series ULTRAlign Linear Stage

NEW Mitsubishi Melsec AX82 Programmable Controller AX82

New Airguard Micropleat 99.99995% Efficiency Filter H22

Cadence Design Systems PCI Express SpeedBridge Speed Br

Cadence Design Systems Palladium PCI Express Adaptor AS

Bogen Classic Series C 35 Amplifier

FOR PARTS Hewlett Packard ISDN Interface, 18358A
1746-A10

HP ProLiant DL145 377884-001 AMD Opteron

NEW Dortronics 5246-K24 Three Button Door Release

HP ProLiant DL145 G2 411095-001

HP ProLiant DL145 G2 411095-001 AMD Opteron

Lot of 3 Simpson DC Amperes Meters
1746-A10

LSI Bogen Flex Pak Solid State Amplifier CHS-100A

WAVECOM QAM Digital Modulator / Upconverter, UCM4540B

Tara Systems GEDITOR+ TV-Data Line Generator

TARA Systems Geditor+ TV Data Line Generator

TANDBERG TT1280 MPEG-2 HD HIGH DEFINITION PROFESSIONAL?