PG calculator queries

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Hi,

consider following values for a pool:

Size = 3
OSDs = 400
%Data = 100
Target PGs per OSD = 200 (This is default)

The PG calculator generates number of PGs for this pool as : 32768.

Questions:

1. The Ceph documentation recommends around 100 PGs/OSD, whereas the
calculator takes 200 as default value. Are there any changes in the
recommended value of PGs/OSD?

2. Under "notes" it says:
"Total PG Count" below table will be the count of Primary PG copies.
However, when calculating total PGs per OSD average, you must include
all copies.

However, the number of 200 PGs/OSD already seems to include the
primary as well as replica PGs in a OSD. Is the note a typo mistake or
am I missing something?

thanks,
Sreenath
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