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PowerStore: DAE Expansion requires escalation following NDU to PowerStoreOS 2.1

Summary: PowerStoreOS 2.1 introduces a possible issue for adding a new DAE following NDU from any previous release to 2.1. This issue may lead to various issues depending on the way the user adds the new DAE. ...

This article applies to This article does not apply to This article is not tied to any specific product. Not all product versions are identified in this article.
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Symptoms

This issue only affects users who upgraded to PowerStoreOS 2.1 and plan to add a new DAE enclosure.
 
Scenario Procedure Followed User Impact
Adding First DAE Enclosure
  • DAE contains drives.
  • All SAS cables are connected before DAE is powered on.
Note: This is the official procedure for adding the first DAE enclosure.
  • One PSU shows empty in the PowerStore Manager.
  • Peer PSU shows uninitialized in PowerStore Manager.
  • PSU firmware upgrade of newly added DAE is blocked.
  • No Alert is raised for DAE PSU issues or AC issues.
  • Drives are integrated into DRE (RAID Subsystem).
  • Potential DU if AC is lost on DAE PSU.
  • If Both nodes reboot, system does not start.
Adding an additional DAE Enclosure
  • DAE with drives is powered on.
  • DAE is connected using single path.
  • DAE is connected using second path.
Note: This is the official procedure for adding an additional DAE enclosure.
  • PSU shows healthy in PowerStore Manager.
  • Internal PSU state is uninitialized.
  • PSU firmware upgrade of newly added DAE is blocked.
  • No Alert is raised for DAE PSU issues or AC issues.
  • Potential DU if AC is lost on DAE PSU.
  • If Both nodes reboot, system does not start.
  • Log flood
Adding an Empty DAE Enclosure
  • Empty DAE is powered on.
  • DAE is connected to one Node.
  • 30 seconds have elapsed before DAE is connected to the other node.
  • This scenario may be more common with APEX users.
  • This issue most likely occurs when adding an additional empty DAE and not the first DAE in the appliance.
  • Internal Software PANIC may lead both nodes to reboot in tandem.
  • Due to both nodes offline concurrently, user may experience DU.

Cause

The cause is a software issue.

Resolution

This issue is resolved in PowerStoreOS 2.1.1.

Workaround: 
Escalate to technical support for a workaround before adding a new DAE enclosure if upgrade to PowerStore 2.1.1 is not possible.

Affected Products

PowerStore
Article Properties
Article Number: 000198829
Article Type: Solution
Last Modified: 02 Dec 2022
Version:  4
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