Effective December 3, NetApp adopts Microsoft’s Business-to-Customer (B2C) identity management to simplify and provide secure access to NetApp resources.
For accounts that did not pre-register (prior to Dec 3), access to your NetApp data may take up to 1 hour as your legacy NSS ID is synchronized to the new B2C identity.
To learn more, read the FAQ and watch the video.
Need assistance? Complete this form and select “Registration Issue” as the Feedback Category.

Active IQ Unified Manager Discussions

Netapp sysstat disk util exceed 100%

FENDERAIYOH

Hi all,

I would like to know why disk util will exceed 100%? Below is the  partial sysstat data that i have

CPU   NFS  CIFS  HTTP   Total    Net kB/s   Disk kB/s     Tape kB/s Cache Cache  CP   CP Disk    FCP iSCSI   FCP  kB/s iSCSI  kB/s

                                  in   out   read  write  read write   age   hit time  ty util                 in   out    in   out

  5%     0     0     0     651  9792  4706   4148      0     0     0     8s  35%   0%  -  100%      0   651     0     0  9191  4252

  5%     0     0     0     682  9557  4883   4280      0     0     0     8s  30%   0%  -  100%      0   682     0     0  8962  4424

  5%     0     0     0     677  9836  4696   4148      0     0     0     8s  31%   0%  -  100%      0   677     0     0  9232  4239

12%     0     0     0     659  8654  4487   4164   3080     0     0     8s  27%  14%  Tn 1008%      0   659     0     0  8110  4067

  8%     0     0     0     475  6398  3313   4168  26248     0     0     8   45% 100%  :f 100%      0   475     0     0  5997  3002

  7%     0     0     0     513  7189  3835   3544  31656     0     0     8   30% 100%  :f 100%      0   513     0     0  6738  3482

Regards,

fender

2 REPLIES 2

AdvUniMD

This is normal and has to do with the way the filer calculates the util% metric (it's not the average over all disks but only the disk with the highest utilization, for example). This is only a display problem and it is even documented (either in the man-page for the sysstat command, or in the admin guides, don't remember where)

You can ignore these bogus lines. However, having a disk utilization of 100% for longer periods is in itself a problem that you should look into. You might have a hotspot disk or some other problem

-Michael

WICKEDSHARK

Michael is correct sysstat only measures the highest number achieved on a single disk in the controller. This is not the average of all disks. Again as MIchael stated having 100% for long period of times is not a good thing. There is a better way to do disk monitoring for utilization of disks using advanced privilege sessions.

Announcements
NetApp on Discord Image

We're on Discord, are you?

Live Chat, Watch Parties, and More!

Explore Banner

Meet Explore, NetApp’s digital sales platform

Engage digitally throughout the sales process, from product discovery to configuration, and handle all your post-purchase needs.

NetApp Insights to Action
I2A Banner
Public