EVA Disk Alarm Levels

[rianui]

Hi,
I have an EVA4000. The environment has only Windows servers. Lately I have noticed disk usage hitting alarm levels yet on the servers the drives space shows disk capacity is more than enough.
I have attached some screen shots here. Kindly point me in the right direction here.
Thanks,

Rianui.

[Duncan Edmonstone]

Rianui,

Unfortunately zip attachements rarely work on the forums

I expect the alarm is about disk occupancy levels in your disk group(s), not about space utilisation on your filesystems.

Take a look at the section entitled "Capacity management and optimized availability" starting on p13 of the EVA best practices doc:

http://h71028.www7.hp.com/ERC/downloads/4AA0-2787ENW.pdf

HTH

Duncan

[rianui]

Thanks Duncan,

From the document, I can set the alarm level to 100%. Mine is currently at 90%.
I have tried to resend the screenshot again just in case.

Rianui

[mmax]

Hello Rianui.
Set occupancy alarm to 100% is not recommended because for the good EVA functionality there have to be free at least 5GB.
There're nice formula in best practices which will count occupancy alarm for you:
Occupancy_Alarm = 100 â ceiling5 ( ( max6 ( PDM_capacity, HP Continuous Access_log_sum) + 5GB ) / total_disk-group_raw_capacity ) )

Have a nice day
michal

[Duncan Edmonstone · Accepted solution]

Alarms are there for a reason - not to be ignored - setting an alarm to 100% is not the answer here. I wouldn't want to be in your shoes explaining to your boss why you set an alarm to 100% after you have some sort of issue relating to low occupancy on your EVA.

You should either:

i) Remove unused vdisks from the disk group if there are any.

or

ii) Add more disks to the disk group

HTH

Duncan

[rianui]

Thanks again,

I will work on the steps you gave and let you know.

Rianui.