VPLEX Rebuild Type

In the output below, there is a rebuild-type parameter.  It is defined as FULL.  Can some in the community please explain what this means, what the other options are, and how are they different?

/distributed-storage/distributed-devices/device_xtrem_xdisk21022_vplex_dvv_test_1:

Attributes:

Name                    Value

----------------------  --------------------------------------------

application-consistent  false

auto-resume             false

block-count             196608000

block-size              4K

capacity                750G

clusters-involved       [cluster-1, cluster-2]

geometry                raid-1

health-indications      [rebuilding]

health-state            minor-failure

locality                distributed

operational-status      degraded

rebuild-allowed         true

rebuild-eta             44.1min

rebuild-progress        63

rebuild-status          rebuilding

rebuild-type            full

rule-set-name           cluster-2-detaches

service-status          running

stripe-depth            -

system-id               device_xtrem_xdisk21022_vplex_dvv_test_1

transfer-size           128K

virtual-volume          device_xtrem_xdisk21022_vplex_dvv_test_1_vol