Adding drives to a Raid 5

[SKy042]

If you have a Raid 5 with say 4 drives in the array. Can you at a later date add 2 more drives to the array without starting from scratch?

 

[Ice Czar]

generally speaking no
some cards can support dynamic addition however
youd need to check the documentation, but typically they are astronomically priced

 

[unhappy_mage]

There are exceptions, though: the RocketRaid 2220 is around $250 and supports OCE.

 

[tdg]

Depends on the card. All my RAID cards support expansion, but they're business class SCSI cards.