I saw in this question that it is possible to place both a SSD and a standard SATA hard drive into a single LVM volume group (VG).
How does this affect performance?
Is there a way to force the OS to be on the SSD while the data is on the SATA drive within a single volume group?
Are there any good whitepapers on using LVM with different types of drives?
Would it be beneficial to create a VG for each drive type and/or speed? I was thinking of creating one VG for SSDs and one for SATA (and for each drive type I may add in the future as it comes).