topic Storage QoS policy in ONTAP Discussions https://community.netapp.com/t5/ONTAP-Discussions/Storage-QoS-policy/m-p/28984#M6722 <HTML><HEAD></HEAD><BODY><P>Dear All,</P><P></P><P>Here regarding throughput restriction (QoS), i am having one doubt. I want to clarify my doubt from below scenario. </P><P></P><P>Example, i am having four 2 TB SATA disks, each of which having 70 IOPS. Total 280 IOPS. All four data disks. If i create four 1 TB Volume (250 GB from each disks...) then "Does <SPAN style="text-decoration: underline;"><STRONG>EACH </STRONG></SPAN>volume will support maximum 280 IOPS ,OR, <SPAN style="text-decoration: underline;"><STRONG>ALL FOUR </STRONG></SPAN>volumes will share max 280 IOPS" ? . </P><P></P><P>I am asking this question because while creating volumes in our enviroment, we are applying qos policy group (2000 IOPS) on each volume then we were getting performance issue, i checked in command prompt (qos stat perf show) where i observed that applied qos policy group was giving maximum 2000 to 2500 IOPS total. If it is sharing the total throughput then what is the use of applying thoughput limit (IOPS) on each storage objects (Volumes, LUNs, Files).?? Please correct me if i am wrong.</P></BODY></HTML> Thu, 05 Jun 2025 05:33:51 GMT SABARNADEB 2025-06-05T05:33:51Z Storage QoS policy https://community.netapp.com/t5/ONTAP-Discussions/Storage-QoS-policy/m-p/28984#M6722 <HTML><HEAD></HEAD><BODY><P>Dear All,</P><P></P><P>Here regarding throughput restriction (QoS), i am having one doubt. I want to clarify my doubt from below scenario. </P><P></P><P>Example, i am having four 2 TB SATA disks, each of which having 70 IOPS. Total 280 IOPS. All four data disks. If i create four 1 TB Volume (250 GB from each disks...) then "Does <SPAN style="text-decoration: underline;"><STRONG>EACH </STRONG></SPAN>volume will support maximum 280 IOPS ,OR, <SPAN style="text-decoration: underline;"><STRONG>ALL FOUR </STRONG></SPAN>volumes will share max 280 IOPS" ? . </P><P></P><P>I am asking this question because while creating volumes in our enviroment, we are applying qos policy group (2000 IOPS) on each volume then we were getting performance issue, i checked in command prompt (qos stat perf show) where i observed that applied qos policy group was giving maximum 2000 to 2500 IOPS total. If it is sharing the total throughput then what is the use of applying thoughput limit (IOPS) on each storage objects (Volumes, LUNs, Files).?? Please correct me if i am wrong.</P></BODY></HTML> Thu, 05 Jun 2025 05:33:51 GMT https://community.netapp.com/t5/ONTAP-Discussions/Storage-QoS-policy/m-p/28984#M6722 SABARNADEB 2025-06-05T05:33:51Z Re: Storage QoS policy https://community.netapp.com/t5/ONTAP-Discussions/Storage-QoS-policy/m-p/28989#M6726 <HTML><HEAD></HEAD><BODY><P>All four volumes will share 280 IOPS. But remember that the SATA disk 70 IOPS you mentioned are 100% random IOPS. If you do sequential IOs you will get much higher number (and remember that OnTap translates random writes to sequential writes)</P></BODY></HTML> Tue, 24 Jun 2014 20:44:44 GMT https://community.netapp.com/t5/ONTAP-Discussions/Storage-QoS-policy/m-p/28989#M6726 MIKHAILFE 2014-06-24T20:44:44Z Re: Storage QoS policy https://community.netapp.com/t5/ONTAP-Discussions/Storage-QoS-policy/m-p/28993#M6729 <HTML><HEAD></HEAD><BODY><P>Thanks for your Valuable reply.</P></BODY></HTML> Wed, 09 Jul 2014 06:05:49 GMT https://community.netapp.com/t5/ONTAP-Discussions/Storage-QoS-policy/m-p/28993#M6729 SABARNADEB 2014-07-09T06:05:49Z