Apache Pinot

we have set it , but we see only data is growing only on /data/hdp09 others are not in use, looks like pinot doesn't support multiple directories, nor I dont find an option in documents. if you also confirm , then we will either work in making a lvm method.

<https://docs.pinot.apache.org/operators/operating-pinot/separating-data-storage-by-age/using-multiple-directories|https://docs.pinot.apache.org/operators/operating-pinot/separating-data-storage-by-age/using-multiple-directories>

<@UDQU92KBK>,
What will happens if one tier storage got filled up before Retention of segment..? The write will be stuck from Pinot Table ..?

Yeah you need to ensure that severs have enough storage 

<@UDQU92KBK> If we do something like this, would this work?
```pinot.server.instance.dataDir=/mnt/disk1/pinot/data,/mnt/disk2/pinot/data,/mnt/disk3/pinot/data```
Our use case is - We have multiple disks available in our servers and we want to take maximum benefit out of these disks. Can we specify disks like this or should we create LVM combining multiple disks and then attach that single LVM in the dataDir

<@UDQU92KBK> Possible for you to help out here?

If you are not doing this for tiering, better to have a single directory to keep it simple

<@UDQU92KBK> So, are you recommending to create LVM out of these disks? If we create LVM, it will have some performance impact

Attaching them as raw disks will give us better performance

Like I said before, your case is not tiering, so you have to create a single mount point.

You also need to evaluate how much does disk IO impact your latency.