Red Hat LINUX VIRTUAL SERVER - FOR ENTERPRISE LINUX 5.2 REV 05-2008 Instrukcja Użytkownika Pobierz pdf (Strona 16)

System z kernel features – DASD

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DASD HyperPAV support (kernel 2.6.25)

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Parallel access volumes (PAV) is a storage server feature, that allows to start

multiple channel programs on the same DASD in parallel. It defines alias

devices which can be used as alternative paths to the same disk.

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HyperPAV is activated automatically when the necessary prerequisites are

there: (DS8000 with HyperPAV LI and z/VM 5.3, when running Linux on System

z as a VM guest)

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See Document: "How to Improve Performance with PAV"

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SIM: system information messages (kernel 2.6.25)

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With this feature the system reports system information messages (SIM) to the

user. The System Reference Code (SRC), which is part of the SIM, is reported

to the user and allows to look up the reason of the SIM online in the

documentation of the storage server.

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4G FICON Express support (test only)

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Ensure that the new 4G FICON links work with the existing DASD driver.

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Red Hat LINUX VIRTUAL SERVER - FOR ENTERPRISE LINUX 5.2 REV 05-2008 Instrukcja Użytkownika Strona 16