302 IBM System Storage N series Hardware GuideUpgrading Data ONTAP software requires several prerequisites, installing system files, anddownloading the software to the system CompactFlash. Required procedures might includethe following steps: Update the system board firmware (system firmware).To determine whether your storage system needs a system firmware update, compare theversion of installed system firmware with the latest version available. Update the disk firmware.When you update the storage system software, disk firmware is updated automatically aspart of the storage system software update process. A manual update is not necessaryunless the new firmware is not compatible with the storage system disks. Update the Data ONTAP kernel.The latest system firmware is included with Data ONTAP update packages forCompactFlash-based storage systems. New disk firmware is sometimes included withData ONTAP update packages. For more information, see the Data ONTAP UpgradeGuide at:http://www.ibm.com/support/docview.wss?uid=ssg1S7001558There are two methods to upgrade storage systems in an Active/Active configuration: NondisruptiveThe nondisruptive update method is appropriate when you need to maintain serviceavailability during system updates. When you halt one node and allow takeover, thepartner node continues to serve data for the halted node. StandardThe standard update method is appropriate when you can schedule downtime for systemupdates.Upgrading Data ONTAP for a single node always requires downtime.Obtaining the Data ONTAP software from the IBM NAS websiteTo obtain Data ONTAP, perform these steps:1. Log in to IBM Support using a registered user account at:https://www-947.ibm.com/support/entry/myportal/overview/hardware/system_storage/network_attached_storage_%28nas%29/n_series_software/data_ontap2. Enter a search query for Data ONTAP under Search support and downloads.Remember: Review the Data ONTAP Release Notes and IBM System Storage N seriesData ONTAP Upgrade Guide for your version of Data ONTAP at:http://www.ibm.com/support/docview.wss?uid=ssg1S7001558
