Siemens U3585-J-Z125-8-76 1, SM2 monitoring system PFA Controller report, Ctl Mn, #Dev, Sec Nr

SM2 reports PFA CONTROLLER report

PREFETCH LENGTH Information on the prefetching strategy (only supported for 3419/21) NONE: No prefetching

LOW: A small number of blocks are prefetched

HIGH: A large number of blocks are prefetched

CTL MN	Mnemonic name of the controller or of the CONTROL DEVICE
	(3419/21)
#DEV	Number of disk devices supported by the cache
SEC NR	Cache sector number on this controller (3419/21 only)
SIZE	Size of the cache sector in this controller in MB (3419/21 only)
READ	Number of read operations to hiperfiles (in I/Os per second)
RD HIT	Percentage of hits in the total number of read operations to hiper-
	files
WRITE	Total number of write operations (in the case of 3860, the number of
	fast write operations) to hiperfiles (in I/Os per second)
WR HIT	Percentage of fast write operations in the total number of write
	operations to hiperfiles
OVERRUNS	Number of unsuccessful attempts to use the cache due to overload
	(per second)

Note

The PFA controller screens are output in the order in which the caches occur in the PFA CACHE report.

If PFA serves the cache via DAB and the DAB monitoring program is activated, DAB monitored data will be supplied in addition to PFA monitored data. If PFA serves the caches of 3419/21 controllers via PCA and the PCA monitoring program is activated, PCA monitored data will be supplied.

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