Not sure if this info has been posted elsewhere, but I know its previously been asked for.
According to a lil program I have some of the "nands" are identified as follows:
nandc
Path: /system
Access: Read only
Capacity: 189.1M
Available: 57.4M
Block size: 1024 bytes
File system: ext4
Device: /dev/block/nandc
Attributes: ro,realtime,barrier=0, data=ordered
nandd
Path: /data
Access: Not accessible
Capacity: 1213.2M
Available: 1051.8M
Block size 4096 bytes
File system: ext4
Device: /dev/block/nandd
Attributes: rw,nosuid,nodev,noatime,barrier=0,data=ordered,noauto_da_alloc
nandg
Path: /cache
Access: not accessible
Capacity: 126M
Available: 121.9M
Block size: 4096 bytes
File system: ext4
Device: dev/block/nandg
Attributes: rw,nosuid,nodev,noatime,barrier=0,data=ordered
Please bear in mind that YMMV as these values are from my Excel.
Hope this helps someone