Dear
Thank you for your questions.
The answer to all your questions can be found in the best practice guide.
Volume Tier Affinity is a settable attribute that allows a storage administrator to define quality of service (QoS) preferences for virtual volumes in a tiered environment. There are three Volume Tier Affinity options—Archive, Performance, and No Affinity. A setting of Archive will prefer the lowest tier of service, Performance will prefer the higher tiers of service, and No Affinity will use the Standard Tiering strategy. Tier Affinity is not the same as Tier Pinning and does not restrict data to a given tier and capacity. Data on a volume with Archive affinity can still to be promoted to a Performance Tier if that data becomes in demand to the host application.
Refer Best Practice: https://h20195.www2.hpe.com/v2/Getdocument.aspx?docname=a00015961enw
The tier I/O panel in the footer shows a color-coded bar for each virtual pool (A, B, or both) that has active I/O. The bars are sized to represent the relative IOPS for each pool. Each bar contains a segment for each tier that has active I/O. Hover the cursor anywhere in this panel to display the Tier I/O Information panel, which shows the following details for each tier in each virtual pool:
• Current IOPS for the pool, calculated over the interval since these statistics were last requested or reset.
• Current data throughput (MB/s) for the pool, calculated over the interval since these statistics were last requested or reset.
The panel also contains combined total percentages of IOPS and current data throughput (MB/s) for both pools.
HPE MSA 1040/2040/P2000 G3 Systems - Performance Monitoring via SMU (Understanding performance tab):
https://support.hpe.com/hpsc/doc/public/display?docId=mmr_kc-0119548
Please refer best practice guide for more information:
https://h20195.www2.hpe.com/v2/Getdocument.aspx?docname=a00015961enw
Hope this helps.
Regards,
Vikas