What is your feedback? SATA, IDE, VIRTIO, qcow, raw, vmdk and cache?

[jmjosebest]

Hey, maybe you want to share your information and explain which method you use in KVM and a short explanation maybe you prefer better speed, or better stability or both is possible?

Driver: SATA, IDE, VIRTIO or SCSI
Disk format: QCOW, RAW or VMDK
Cache: No cache, Direct Sync, Write throught, Write back or Write back (unsafe).

Thanks!!