HPE Storage Users Group

my googling skills have failed me to day.

I'm trying to setup some Schedule reports to be emailed out.

looking for

FC disk Iops 15,10K
SSD disk iops
Near line disk iops
All my 3par systems with a daily IOP count
Ports to host , just to check if there balanced

I generally do these manual but would be nice to get them by email, I'm completely lost in what to out in the report parameter box doses not seem very intuitive.

Also could some one tell me what the recommended max iops per disk is HP excepted for SSD, can not seem to find this anywhere.
I have Near line 75IOPS 10K 150IOPS 15K 200IOPS.

Last one any one know a report I can run to keep an eye on the cache we had an issue years ago were by the nearline disk were flooding the cache because they could not wright the data down to disk quick and causing the fiver channel disk to have high latency the disk iops were fine but it was al cache related .

You should also look at latency as it's a better indication of things going wrong than just IOps which can still look Ok even though the workload may have changed significantly (read/write - I/O size etc). To prevent the situation you described you should monitor the cache via "cmp" "delack_nl" once the disks go into delayed acknowlegement then the cache can't flush quickly enough to disk, however note the counter is cumulative.

I do this by the 3par command tools is there away to get sysreporter to alert on this ?

Can not seem to find any thing.

Internal or external system reporter ? if it's internal then you can use "createsralertcrit", although this wouldn't be a report more of a threshold triggered alert.

Hi All,

How can we check the latency...!!!

Using Service Time..??

Regards,
KK

VLUN service time takes into account the host round trip, whereas VV just the internal service time. You could also monitor the host ports or use createsralertcrit on the host facing ports assuming you have data today that you can use as a decent baseline.