Data Domain DD400 Series, Руководство пользователя

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254 DD400 Series Restorer User Guide
Percent of a compression unit cache block that is unused.
Compression indicates that a lot of space is wasted by cache
block fragmentation. In the ideal case, ovhd equals unus.
data
Percent of data segment lookups that miss in the cache. A
high percent indicates poor data prefetching.
meta
Percent of meta data segment lookups that miss in the cache.
Each data access first performs a metadata lookup followed by
a data lookup. A high percent indicates poor metadata
prefetching.
rd
Active read streams.
wr
Active write streams.
rw
Active streams with simultaneous read and write traffic.
xx
Active streams for operations other than read or write (such as
create).
show serialno
Display the system serial number.
show stats
Display system statistics for the use of CPUs, disks, Ethernet
ports, and by NFS operations. The time period covered is from
the last reboot, except when using interval and count .
An interval , in seconds, runs the command every given number
of seconds for the number of times in < count >. The first report
covers the time period since the last reboot. Each subsequent
report is for activity in the last interval.
The start and stop options return averages per second of statistics
over the time between the commands.
show uptime
Display the amount of time that has passed since the last reboot.
show version
Display the version of restorer system software.