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System Dump Commands

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SYSTEM DUMP
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IBM recommends:
Don't mirror the system dump device
Don't use compression on the dump device
Don't use a secondary dump device unless it is on a separate device,
separate cable and separate i/o card.

sysdumpdev -l Lists current dump destination.
sysdumpdev -e Estimates dumpsize of the current system in bytes.
sysdumpdev -L Displays information about the previous dump.
sysdumpdev -c <-- the system dump device will not be compressed
when the next dump is taken
sysdumpdev -p (dump device) -P Sets the default dump device, permanently
sysdumpdev -P -s /dev/sysdumpnull <-- makes the secondary
dump device a bit bucket (recommended)

sysdumpstart -p Starts a dump and writes to the primary dump device.
sysdumpstart -s Starts a dump and writes to the secondary dump device.

Unix Systems: 

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