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Graphics Interchange Format  |  1997-01-15  |  111KB  |  429x480  |  8-bit (85 colors)
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OCR: Categories Of High-Availability Systems FIGURE 1 Activity limited All systems in use A failure does A failure may Coordination not affect affect application Addressability Mechanism application performance performance Activities coordinat- Can address any ed by hardware and/or special Hardware parallel node for shared func- tion, Application run- enabling software fault (clustered) tolerant ning on multiple systems Activities coordinate Must address the ed by failover soft- idle partitoned ware and system (standby) right node. Specific nodes run specific administrator processes