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Tivoli Development Services © 2010 IBM SWG/TDS/CN ITMfVE7.1 – Use Cases for vAdmins ITM for Virtual Environments Chris Nero
Tivoli Development Services © 2010 IBM SWG/TDS/CN2 The Concept Bundle ITM, TBSM, TCR, TIP, Omnibus, and Websphere Include pre-made OOTB dashboards and reports
Tivoli Development Services © 2010 IBM SWG/TDS/CN First Look 3 This is the TIP, the portal. Notice the Virtualization section under Reporting. Here are the dashboards under System Status and Health. Here is the Capacity Planning Center.
Tivoli Development Services © 2010 IBM SWG/TDS/CN Use Case #1 A vAdmin wants to quickly check the health of the cloud. 4
Tivoli Development Services © 2010 IBM SWG/TDS/CN Select the VMware Cluster Dashboard 5
Tivoli Development Services © 2010 IBM SWG/TDS/CN Scan the Server, Storage, and Network Columns Hover over anything red to see details –Here we see datastore has less than 20% free space 6
Tivoli Development Services © 2010 IBM SWG/TDS/CN7 More Cluster Details Notice you can set the time range All servers are available CPU isn’t working too hard Notice the over allocation of memory but yet VMs aren’t using all that is available to them Again notice the over allocation of storage but yet free space remains. This is likely our 20% reserve Hover over any bar and the value will display
Tivoli Development Services © 2010 IBM SWG/TDS/CN More Cluster Details 8 Unknown guests are likely templates Note the VMs and VMs powered on
Tivoli Development Services © 2010 IBM SWG/TDS/CN Use Case #2 A vAdmin wants to dig deeper into datastore utilization –Run the Datastore Capacity and Performance Trend report from the Workload Performance Trends and Forecasting report set. (Click the green triangle) Select the datacenter of interest Select only the datastores of interest 9
Tivoli Development Services © 2010 IBM SWG/TDS/CN10 To go back to the report set click the “home” icon Above we see that most of my datastores are above capacity (80%) Hover over any datastore to see the details
Tivoli Development Services © 2010 IBM SWG/TDS/CN11 Hover over any of interest to see the details. Here I see has some high I/O VMs that I may want to move to another datastore for better load balancing To see which VM is causing the high I/O I go into ITM I look at Datastores under vCell70. Click on the Name column to sort and find Click the chain link to see more.
Tivoli Development Services © 2010 IBM SWG/TDS/CN12 I can clearly see that VM Denali is producing all of the I/O
Tivoli Development Services © 2010 IBM SWG/TDS/CN Use Case #3 A vAdmin wants to look out in the future to see what resources will look like based on some period of historical data. –Run the Cluster Forecast Alerts report from the Workload Performance Trends and Forecasting report set. (Click the green triangle) 13
Tivoli Development Services © 2010 IBM SWG/TDS/CN I can now forecast my critical resources (CPU, RAM, Storage) out 120 days or more (or less) 14 I can clearly see that Memory will be at capacity (80%) so I can prepare for an upgrade or prepare to offload VMs from this cluster to another.
Tivoli Development Services © 2010 IBM SWG/TDS/CN Use Case #4 A vAdmin wants to see if he can fill a request to spin up 10 new VMs with specs 2 vCPU, 4 GB Ram, 50 GB storage. –Run the Resources Needed for Additional Workloads on Clusters report from the What If Analysis for Capacity Estimation report set. –Report requires you to stipulate GHz of vCPU not number of vCPUs. –Report gives you the ability to set a limit or reserve a buffer. 15
Tivoli Development Services © 2010 IBM SWG/TDS/CN16 You calculate your buffer (reserve CPU, Memory, Storage) using ITM. ITM shows you Effective (available for VMs) CPU, Memory, and Storage. You apply our 70% CPU, 80% Ram, and 80% storage to calculate the buffer used in the report. In this case I will buffer 97 GHz vCPU, 195 GB Ram, and 8879 GB Storage.
Tivoli Development Services © 2010 IBM SWG/TDS/CN17 Below you can see the resulting report considering the specs I set for the 10 VMs and the buffer I set. You can see that the tool calculates what resources are needed, subtracts the buffer out of what is available, and finally indicates what additional capacity, if any, is needed to fill the request. In this case I have the resources available to fill the request.
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