Good post from Nick Howell (thank you) on the ONTAP 8.1
It’s been a long-time-coming. Work on a level that even I cannot comprehend has led to this day: Cluster-Mode has officially arrived. (Requires NetApp Support account)
I know a lot of you are chomping at the bit for the continuation of the series I started about a month or so ago regarding Cluster-Mode, and… hang tight… it’s coming! I decided to hold off until the product GA’ed, and you’re going to see a lot of those trickle out over the next few days, but I wanted to jump in and throw out some things and tools you’re going to need to know.
DS14 disk shelves – ByeBye! Beginning with Data ONTAP 8.1, DS14mk2 disk shelves with ESH2 storage I/O modules are no longer supported. If even one of these devices is attached to your storage system, do not upgrade to Data ONTAP 8.1 or later until after you replace the devices.
FlashCache & Older platforms - If you have a 3210 or 3140 storage system with Flash Cache modules installed, do not upgrade your system to Data ONTAP 8.1. Flash Cache modules are not supported on 3210 or 3140 storage systems with Data ONTAP 8.1.
Unicode or BUST! - Data ONTAP 8.1 Cluster-Mode and later in the 8.0 release family only support Unicode clients when accessing data using CIFS. Prior to upgrading your cluster to Data ONTAP 8.1 Cluster-Mode or later, ensure that all CIFS clients can access data using Unicode.
Read on here