storage - Does the LSI 9211-8i add any data structures of its own when used in pure HBA (JBOD) mode?

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I'm looking at adding some disks to
one of my systems, for which I need to add an offboard HBA. Looking around, I came
across the LSI MegaRAID SAS 9211-8i (LSI part number LSI00194)
which looks quite interesting. LSI also seem to be popular in general, including href="https://serverfault.com/a/420812/58408">right
here.

Since I run ZFS, I
plan on using the HBA itself as just a dumb controller, letting ZFS handle everything
related to storage-level redundancy and recovery. The host OS is Linux (Debian/Linux to
be precise).

While I doubt LSI will stop
producing these cards any time soon, it would still be nice to know: does
the 9211-8i add any data structures of its own to the disks when used in JBOD
mode? In other words, can I unplug a disk from the 9211-8i, plug it into
an alternate HBA, and everything "just keeps working"? Or will the OS then see some form
of garbage on the disk that is not exposed through the LSI, which might interfere with
ZFS' usage of the volume?

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class="normal">Answer

No. The
disks are raw and portable when used with a pure SAS HBA like the LSI-9211. There's no
RAID metadata involved here.

Also see: href="https://serverfault.com/questions/84043/zfs-sas-sata-controller-recommendations">ZFS
SAS/SATA controller recommendations

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