Controllers in a Sun Storage 6000/2500/2500-M2/Flexline Array Have an 820 Day Uptime Limit

Asset ID:	1-79-1569641.1
Update Date:	2018-04-20
Keywords:

Solution Type Predictive Self-Healing Sure

Solution 1569641.1 : Controllers in a Sun Storage 6000/2500/2500-M2/Flexline Array Have an 820 Day Uptime Limit

Applies to:

Sun Storage Flexline 380 Array - Version Not Applicable and later
Sun Storage 6780 Array - Version All Versions and later
Sun Storage 2510 Array - Version Not Applicable and later
Sun Storage 2530 Array - Version Not Applicable and later
Sun Storage 2540-M2 Array - Version Not Applicable and later
Information in this document applies to any platform.

Purpose

This document describes the 820 day uptime limit which affects the controllers within a Sun Storage 6000, 2500, 2500-M2 and Flexline Array.

Details

After 820 days of continuous operation a controller in a Sun Storage 6000, 2500, 2500-M2, Flexline Array will automatically reboot due to an uptime limitation within the controller firmware. This reboot cannot be avoided and affects all firmware versions of the arrays, including both 06.xx and 07.xx firmware releases. This behaviour cannot be changed, so there will never be a fix for this issue. It is a known limitation of the array.

The exact behaviour in relation to the reboots after 820 days differs between 06.xx firmware releases and 07.xx firmware releases :

In 6.xx firmware both controllers are scheduled to automatically reboot after approximately 825 days of uptime. If both controllers were previously rebooted at the same time, this will cause an unscheduled simultaneous reboot of both controllers which can impact host i/o. This problem is discussed in the Alert <Document 1128605.1> Firmware for RAID Controllers Causes Unscheduled Simultaneous Reboot of Controllers After 828.5 Days of Continuous Operation.
In 7.xx firmware each controller is scheduled to reboot at different times - Controller A will reboot after approximately 820 days of uptime, Controller B will reboot after approximately 825 days of uptime. If both controllers were previously rebooted at the same time then this avoids an unscheduled simultaneous reboot. Provided all the attached data hosts have multipathing configured and in an optimal status then these sequential reboots will not impact host i/o.

To check the uptime of a controller refer to <Document 1455525.1> How to Determine Uptime of Sun Storage[TM] 2500, 2500-M2 and 6000 Disk Arrays.

Note : If a controller is manually rebooted before it's uptime limit is reached then this will reset the uptime counter back to zero and defer the automatic reboot for another 820 days

References

<NOTE:1128605.1> - Firmware for RAID Controllers Causes Unscheduled Simultaneous Reboot of Controllers After 828.5 Days of Continuous Operation
<NOTE:1455525.1> - How to Determine Uptime of Sun Storage[TM] 2500, 2500-M2 and 6000 Disk Arrays

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