1 Copper

Feedback Request: Avamar User and OS Capacity Management Concepts and Training

Fellow Avamar Community followers:

  • We want to bring your attention to the following articles that was enhanced last week entitled: “Avamar User and OS Capacity Management Concepts and Training”. The article can be accessed at URL: https://community.emc.com/docs/DOC-17333 Please see excerpt below for your convenience.

  • We would greatly appreciate your feedback on this article; specifically:
    1. Is the article helpful?
    2. Does it help you better understand how best to manage the capacity on your Avamar system(s)?
    3. Do you have questions that you would like to raise? If yes, please provide your question(s)
    4. What additional self-help information would you like to see related to “Avamar Capacity Management”?

  • We look forward to reading your feedback and for your convenience, we have included an excerpt below of the article:

Article https://community.emc.com/docs/DOC-17333 excerpt:

One of the key goals when administering Avamar is to effectively manage capacity levels on the system.

Running the system in a ‘steady state’, where the amount of incoming and expiring backup data is similar, will allow Avamar to make most efficient use of the storage space available whilst reliably performing daily maintenance activities.

These maintenance activities, (checkpoint creation & validation, garbage collection & stripe crunching), are essential to Avamar’s overall health and availability, including operating within the same storage as the de-duplicated backup data. Hence, it is important to manage the system capacity from both perspectives: to ensure space for both client backups and daily maintenance operations.

This article will discuss these aspects in more detail and help the reader understand and manage both “User Capacity” and “OS Capacity” in addition to the following topics:

      • Summarize the types of data stored in the /data* partitions
      • Explain why Avamar should not be run close to the User Capacity limit
      • List the factors which contribute to checkpoint overhead
      • Describe how to monitor data partition utilization
      • Describe the symptoms experienced if OS capacity gets out of control
      • List typical causes of the MSG_ERR_DISKFULL messag
      • Outline the recovery methods used where high OS capacity is impacting normal system operation
      • Describe the symptoms experienced if User Capacity exceeds the User capacity limit
      • Discuss how to recover from a high User Capacity situation


To learn more, please visit: https://support.emc.com/kb/457224

Thanking you in advance for your participation.