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Exachk fails due to incorrect flashcache size after upgrading from 1/8 to a 1/4 rack (Doc ID 2048491.1)

Last updated on AUGUST 26, 2015

Applies to:

Oracle Exadata Storage Server Software - Version 11.2.3.3.0 and later
Information in this document applies to any platform.
Applies to X3-2 & X3-8 systems

Symptoms

 After upgrading an 1/8 rack to a 1/4 rack, Exachk fails due to incorrect flashcache size.

Either of the 2 cases below could happen dependent on the Flash Cache configuration:

Case 1: Incorrect Flash Cache Size with Smart Flash Log enabled:

Exachk detects incorrect size: 1488.25G

Should be size: 1488.75G

Case 2: Incorrect Flash Cache Size with flashCacheCompression and Smart Flash Log enabled:

Exachk detects incorrect size:   2978.25G

Should be size:  2978.75G

 

Changes

 X3-2 or X3-8 who upgraded from 1/8 to a 1/4 rack

Cause

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In this Document
Symptoms
 Case 1: Incorrect Flash Cache Size with Smart Flash Log enabled:
 Case 2: Incorrect Flash Cache Size with flashCacheCompression and Smart Flash Log enabled:
Changes
Cause
Solution
 Case 1: flashcache size was 1488.25G but expected size on a quarter-rack is 1488.75G & "Write back flash cache" IS NOT IN USE:
 Case 2: flashcache size was 2978.25G but expected size on a quarter-rack is 2978.75G & "Write back flash cache" IS IN USE:

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