Planned outages can render a system unavailable for many hours, even days, e.g., to perform hardware updates. Service Level Agreements commonly do not include planned outages in the calculation of overall availability figures. Why?
2:
I have 10 tape- drives that individually have an MTBF of 400,000 hours. How many tape drive failures would I expect in a one-year period?
3:
HP-UX Trusted Systems offer several additional security features. Why would Trusted Systems be considered a good inclusion in a High Availability clz`uster where many users access individual systems and applications? Also explain why HP-UX Trusted Systems may be considered a poor choice in the same situation.
4:
Should client PCs in a High Availability cluster support dynamic routing? If not, why not? Is the Router Discovery Protocol sufficient? Are there any features of RDP that we need to consider?
5:
Looking at Figure 24-6, could this be considered a valid High Availability Serviceguard cluster?
