Linux – How to iterate bash arrays and make an SCP command efficiently

I need to scp the files from machineB and machineC to machineA. I am running my below shell script from machineA. I have setup the ssh keys properly.

If the files are not there in machineB, then it should be there in machineC.

#!/bin/bash

readonly PRIMARY=/data01/primary/.
readonly FILERS_LOCATION=(machineB machineC)
readonly MAPPED_LOCATION=/bat/data/snapshot
PARTITION=(0 3 5 7 9)

dir1=/bat/data/snapshot/20131222
dir2=/bat/data/snapshot/20131222

scp david@${FILERS_LOCATION[0]}:$dir1/weekly_1980_[$el]_200003_5.data $PRIMARY || scp david@${FILERS_LOCATION[1]}:$dir2/weekly_1980_[$el]_200003_5.data $PRIMARY

Now my question is if you take a look into my above scp command, I have [$el] for now (which is wrong), I need to replace this with PARTITION, which means I need to iterate PARTITION and replace [$el] with each number in PARTITION.

So my scp command should look like this if I iterate PARTITION one by one –

scp david@machineB:/bat/data/snapshot/20131222/weekly_1980_0_200003_5.data /data01/primary/. || scp david@machineC:/bat/data/snapshot/20131222/weekly_1980_0_200003_5.data /data01/primary/.

scp david@machineB:/bat/data/snapshot/20131222/weekly_1980_3_200003_5.data /data01/primary/. || scp david@machineC:/bat/data/snapshot/20131222/weekly_1980_3_200003_5.data /data01/primary/.

scp david@machineB:/bat/data/snapshot/20131222/weekly_1980_5_200003_5.data /data01/primary/. || scp david@machineC:/bat/data/snapshot/20131222/weekly_1980_5_200003_5.data /data01/primary/.

scp david@machineB:/bat/data/snapshot/20131222/weekly_1980_7_200003_5.data /data01/primary/. || scp david@machineC:/bat/data/snapshot/20131222/weekly_1980_7_200003_5.data /data01/primary/.

scp david@machineB:/bat/data/snapshot/20131222/weekly_1980_9_200003_5.data /data01/primary/. || scp david@machineC:/bat/data/snapshot/20131222/weekly_1980_9_200003_5.data /data01/primary/.

Problem Statement:-

1. How do I iterate PARTITION in such a way, so that I can make the above SCP command?
2. And also, as you can see, I am copying the files one by one into machineA /data01/primary/ folder. Is there any better way of doing this? Meaning, can I copy all the files together in one shot instead of doing it one by one?