Newbie question...

I am having a heck of a time understanding my device names. I know they are under the /dev folder, but there are so many! We are running an Intel RAID controller with five HDD's in the array. What would the device be?

The reason I am asking is I am trying to put together a DRBD system to sync two systems together for redundancy. I have found plenty of documentaion outlining the set up process, but not the drbd.conf file itself. It is specifying hda0, hada1, etc. and I am really not following them.

Any help would be very appreciated.

hda is the first drive, hda1, hda2 the partitions.
hdb, hdc, etc, are the other drives.

Device name:- hda- primay master (for ide HDD`s)
hdb- primay slave (for ide HDD`s)
hdc- secondary master (for ide HDD`s)
hdd- secondary slave (for ide HDD`s)
and similarly in case of SCSI as well as USB drives HDD`s

sda- for first SCSI drive
sdb- for second SCSI drive and so on...

hda1 will be the first primary partition of hda drive,hda2 will be second primary partition of hda drive,but always remember that hda1-4 are reserved for four primary partitions, so if you have got only one primary partition then the second extended partition will be treated as hda5 not hda2.

Regards,.

I think sda is used for both SATA drives and USB memory sticks.

Yes. USB memory disks are treated as SCSI devices.

YES ofcourse thats why i had written :-

in case of SCSI as well as USB drives HDD`s

Regards,

Harinder Singh