Tag Archives: emc

#STBY – DellEMC DataDomain DDos 6.0 Deletes Valid Data

Got DataDomain? Got DD OS 6.0? Your #VALID data may be getting deleted and you don’t even know it!


Segments ingested while the unit is in a cleanup cycle may be deleted, as the unit incorrectly marks them as invalid. You would not know you lost these segments until you attempted to restore!

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#STBY – EMC Isilon OneFS failure/reboot after 248days

Just a heads up –  Isilon OneFS: Nodes containing Mellanox ConnectX-3 adapters may unexpectedly reboot after running for 248.5 consecutive days, which may result in data unavailability ( ETA 491747 )


This primarily hits systems with OneFS 7.2.1.

Reboot those nodes ahead of time or patch if possible!   Otherwise, it’ll #SucksToBeYou!

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pkgrm EMCpower kills Solaris

EMC to NetApp Solaris FCP migration – Recovery When EMC Breaks the box

So, I have been working on an EMC to Netapp migration project, and the customer is entirely Solaris 10 on their Oracle DB environment. (They want to change, sadly they cannot at this time.)

Dealing with migrations between vendors can be difficult. In EMC’s world, we have POWERPATH, which is a pile of suck when you have to work with SAN vendors on the same box who want to rightly use MPXIO (Native multipathing). I hate 3rd party addins for things like Multipathing. This is 2014, the crap is built in!

Well, what happens when you switch a box from POWERPATH to Native multipathing with MPXIO? All the power path stuff goes mad and it can’t find any of it. That is for another blog power, not this one.

What about when the migration is done, and you want to remove POWERPATH from the server? Well it’ll kernel panic the box, it’ll corrupt the boot archive, and you will be in a reboot loop. Dead in the water, thanks to EMC.

This post isn’t just about migrating to NetApp, it’ll help anyone who tried to uninstall PowerPath on solaris, and got corrupted system files from it, and how to rebuild the BOOT ARCHIVE.

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Tip #8: Set your damn host timeouts!

I saw a question on LinkedIn on the Netapp group today.

“what is the downtime (in seconds) for a FAS2240 high-availability machine in case one controller fails and the other takes over? ”

My pre-first cup of coffee answer was less on the question, and more on proper upkeep of a system running on a SAN/NAS. Any SAN/NAS. Set your damn timeouts on your hosts!

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