The first minor release of the 2011.1.1 major release for the ZFSSA came
You can get the code via MOS, under the "Patches and updates" tab. Just
click the "Product or Family (advanced)" link, and then type "ZFS" in
the search window and it really takes you right to it. Or search on it's
patch ID, which is 13772123
Along with some other fixes, the most important piece of this update is the RPC flow control fix, which will greatly help those using the ZFSSA to backup an Exadata over Infiniband.
If you're not already on the major release of 2011.1.1, I urge you to update to it as soon as you can. You can jump right to this new 2011.1.1.1 code, as long as you are already on 2010.Q3.2.1 or higher. You don't need to go to 2011.1.1 first, just jump to 2011.1.1.1.
If you are using your ZFSSA to backup an Exadata, I urge you to get on 2011.1.1.1 ASAP, even if it means staying late and scheduling special time to do it.
It's also important to note that if you have a much older ZFSSA (one of the 7x10 models that are using the older SAS1 HBAs, and not the SAS2 HBAs), that you do NOT upgrade to 2011.1 code. The latest code that supports your SAS1 systems is 2010Q3.4.2.
**Update 2-26-12: I noted a few folks saying the link was down, however that may have been a burp in the system, as I just went into MOS and was able to get 2011.1.1.1 just fine. So delete your cookies and try again. - Steve