![]() | Sun System Handbook - ISO 4.1 October 2012 Internal/Partner Edition | ||
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Solution Type Problem Resolution Sure Solution 1009497.1 : Sun StorEdge 3310/3510/3511/3320: Resolving Data Unavailability issues due to different default Cylinder/Head/Sector settings after firmware upgrade.
PreviouslyPublishedAs 213111 Symptoms 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 The defaults in the 4.1x firmware are as follows: 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. Resolution To access data after upgrading the array firmware, change the cylinder/head/sector settings to what it was set prior to the firmware upgrade. For example: if the settings were:
Cylinder = Variable then, change the settings to the above. We can stop here and choose to keep the C/H/S settings and always remember the same and ensure that they remain the same. However,it is highly recommended that we change the C/H/S settings to the 4.x default. Do this as follows: 1. Take a backup of the data. 2. Change the settings to the 4.1x firmware default: 3. In the Solaris operating environment, run the format utility.
This enables the host to reconfigure the size of the disk appropriately and re-label the disk with the current firmware revision level. 4. Once that is done, restore the data from backup. 5. Now you can access the data using the default setting of 4.x firmware. Additional Information The following is strictly for the use of Oracle employees: SunAlert 101612 : Documents Incorrectly State Cylinder/Head/Sector Configuration for Sun StorEdge 3310 and 3510 Arrays - May Render Filesystems Unrecoverable... Symptom Resolution <Document: 1006040.1> Sun StorEdge 3x10 Array: newfs fails with Error on "minimum cylinders per group" Product Sun StorageTek 3511 SATA Array Sun StorageTek 3510 FC Array Sun StorageTek 3320 SCSI Array Sun StorageTek 3310/3510/3511 Firmware 4.11 Upgrade Sun StorageTek 3310 SCSI Array cylinder, head, sector, 3510, 3310, 3511, 3320, default, upgrade, 4.11, 4.13, 4.15, 3.27, 3.25 Previously Published As 85526 Change History Date: 2006-05-04 User Name: 111868 Action: Approved Comment: checked keywords checked TM - corrected checked expiry date checked audience publishing Version: 4 Date: 2006-05-04 Attachments This solution has no attachment |
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