Hello nid15, Since you will running ESXI 5.1 & 5.5 I would recommend that you upgrade to the latest version of firmware for your MD3220i. Here is the link to the firmware for the MD3220i & the hard drives as well as the link to the newer version of the Resource cd that has the new version of MDSM. MD3220i firmware: [URL]   HDD Firmware: [URL] Resource CD: [URL] Here are the steps that is needed to upgrade your firmware on any MD3xxx system. If your current firmware is not 7.75.28.60 A06 8/3/11 – you MUST step to 7.75.28.60 before going to 07.80.62.60. This firmware is included with the 07.80.62.60 download.   10. Update the hard drive firmware. 11. Reboot stack and verify all is optimal.    Please allow for at least 60-85 minutes for the updates.  Time may vary depending on how long each reboot takes. Please let us know if you have any other questions.
Hello, We have a setup with  1 MD3220i, 2X R815 hosts running esxi 4.1U3 free and 2 X 5548 switches. We just purchased another MD3220i (not installed yet) and are planning to upgrade hosts to esxi 5.1 free. I have been told that the older firmware in MD3220i has problems with esxi5.5. Can you suggest what is the best upgrade path for our system with this configuration. I don't know what the new MD came with since I have not yet powered it on.   MDSM 10.80.G6.81 Current configuration  Firmware version: 07.80.41.60  NVSRAM version: N26X0-780890-001  AMW version: 10.80.G6.61 iSCSI RAID controller module  Vendor: ServerEngines Corporation  Part number: ServerEngines SE-BE4210-S01  Serial number: 782bcb77b2a9  Firmware revision: 2.300.310.15 hard drive 1 (12 of these 600GB 10K) Product ID: ST9600205SS  Physical Disk Firmware Version: CS05 hard drive 2 (12 of these 900GB 10K) Product ID: ST9900805SS  Physical Disk Firmware Version: CS08 Thanks
Upgrade instructions for MD3220i