FS System: SanDisk 1.6TB SSD (Solid State Disk) Drives Have Latency Issues in Clustered Environments

Asset ID:	1-72-2044905.1
Update Date:	2016-10-31
Keywords:

Solution Type Problem Resolution Sure

Solution 2044905.1 : FS System: SanDisk 1.6TB SSD (Solid State Disk) Drives Have Latency Issues in Clustered Environments

Applies to:

Oracle FS1-2 Flash Storage System - Version All Versions to All Versions [Release All Releases]
Information in this document applies to any platform.

Symptoms

SSD Drives will either go offline and then comeback on line within 60 seconds or fail altogether. Either of these symptoms will likely generate log bundles with the following events:

ENCLOSURE_DRIVE_STATE_CHANGE
RAID_EVENT_SAVE_TRACE

The issue is only seen with SanDisk 1.6TB SSD Drives in an FS1-2 Flash Storage System in a clustered environment under a heavy load.

Changes

Cause

The SanDisk 1.6TB SSD Drive is a dual ported device. Typically IO comes down one path but in a clustered environment with a heavy load, both ports will be active and can be over-run. This can either cause the SSD Drive to go offline or to be failed.

Solution

The problem is fixed in drive firmware version A318. This drive firmware is part of the R6,2.9 (or later) version of the FS1-2 software. Updating drive firmware is a disruptive upgrade which requires an outage.

References

<BUG:20275961> - COAXM093 ENCLOSURE 07 HAS FAILED CAPSSD DRIVE DURING IO RUN ON THE SYSTEM
<BUG:21418346> - MULTIPLE SSD FAILURES AT BANCO ORIGINAL
<NOTE:1684888.1> - FS System: How to Change the Mounting Bracket of a 1.6TB SSD Drive in an FS1-2 Drive Enclosure

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