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richtee1
1 Copper

How much free space is required on each Centera node to perform an upgrade from 4.2.0 to 4.3.x?

How much free space is required on each Centera node to perform an upgrade from 4.2.0 to 4.3.x?

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East_TN_EMC
2 Bronze

Re: How much free space is required on each Centera node to perform an upgrade from 4.2.0 to 4.3.x?

The Centrastar upgrade only writes to the operating system partitions on a node.  In unix/Linux parlance, we are talking about the "/" "/usr" "?var" partitions to name a few.  The application data is stored on other partitions that are not touched during a Centrastar upgrade.

There are pre-upgrade checks that are run by the upgrading engineer to check the health and upgrade-suitability of the cluster.  One of these checks involves checking these OS partitions for required free-space.  If the checks indicate there is not enough free-space, the CE would engage an FSS or the Centera support lab to address the issue (again, leaving the data stored on the Centera untouched).

So a node that is showing as "completely full" in the Centera Viewer would still be able to be upgraded without issue.

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