Sun StorEdge 3310/3510/3511/3320: Resolving Data Unavailability issues due to different default Cylinder/Head/Sector settings after firmware upgrade.
Last updated on AUGUST 12, 2013
Applies to:Sun Storage 3511 SATA Array - Version Not Applicable and later
Sun Storage 3310 Array - Version Not Applicable and later
Sun Storage 3320 SCSI Array - Version Not Applicable and later
Sun Storage 3510 FC Array - Version Not Applicable and later
The Array Firmware 4.1x upgrade instructions state that some settings are not restored after the upgrade, they have to be manually restored. One such setting is the cylinder/head/sector values. The default settings for cylinder/head/sector for 4.1x are different from the default in the 3.2x firmware.
The default settings in the 3.2x firmware are as follows:-
Cylinder = Variable
Head = Variable
Sector = Variable
The defaults in the 4.1x firmware are as follows:
Cylinder < 65535
Head = 64
Sector = variable
If a Logical Drive was created with the default settings in 3.2x firmware or settings different from the 4.1x default, and then the Array is upgraded to 4.1x, it will lead to data unavailability issues. This document explains how to resolve this.
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