Dell 341-7212 User Guide - Page 59
Troubleshooting, Pinned Cache State
View all Dell 341-7212 manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 59 highlights
Troubleshooting To get help installing Dell SAS RAID Storage Manager on your Dell™ PERC 5/i, SAS 5/iR, PERC 6/i, or SAS 6/iR system, you can contact your Dell Technical Service representative or access the Dell Support website at support.dell.com. Pinned Cache State If a virtual disk becomes offline or is deleted for any reason, the firmware preserves the dirty cache from the virtual disk. This preserved dirty cache is called pinned cache, and is preserved until you import the virtual disk, or discard the cache. NOTE: The pinned cache information applies only to the PERC 6 controllers. You can use the software utility to select whether to import the virtual disk or discard the pinned cache. In the VD Mgmt menu, select Manage Preserved Cache and follow the steps on the screen. NOTE: For the procedure used to import the virtual disk or discard the pinned cache, see "Preserving Pinned Cache" on page 55. Certain operations, such as creating a new virtual disk, cannot be performed if pinned cache exists. In addition, if you reboot your server, the operating system will not start as long as the pinned cache exists. Messages notify you that you cannot perform the procedure until you either delete the pinned cache or import the virtual disks with the pinned cache. If there are any foreign configurations, it is strongly advised that you import the foreign configuration before you discard the preserved cache. Otherwise, you might lose data that belongs with the foreign configuration. NOTE: Firmware deletes a virtual disk if the virtual disk loses all of its drives, even if you did not intend to delete the virtual disk. This causes loss of data. Such unintended cases can occur to configured drives due to unexpected cable failure or power failure. Troubleshooting 59