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<blockquote data-quote="cics" data-source="post: 373777" data-attributes="member: 63469"><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile&nbsp; &nbsp; :)" loading="lazy" data-shortname=":)" /> Yes, your controller is a piece of hardware with PCI interface. But it's still a Firmware/driver-based RAID (I did google and read it specification).Hardware controller is expensive, while software raid is unreliable. Operating system-based RAID fills the gap in between hardware and software raid. It doesn't contain a RAID controller chip, but simply a standard disk controller chip with special firmware and drive. Boot up is done by it firmware but raid controlling is done by OS' driver (Windows) or kernel (Linux). I always advice everyone to go with hardware controller (with it own CPU, RAM and battery backup if possible). Yes, they are expensive but 4TB+ of data lost for some are more expensive than the cost of the raid controller.My favorite manufacturer is Adaptec&nbsp; and for home users a 128MB RAM on board should be enough. However if you have lots of clients (or ... example bittorrents concurrent downloads), you may consider 256MB+.</blockquote>

[QUOTE="cics, post: 373777, member: 63469"] :) Yes, your controller is a piece of hardware with PCI interface. But it's still a Firmware/driver-based RAID (I did google and read it specification). Hardware controller is expensive, while software raid is unreliable. Operating system-based RAID fills the gap in between hardware and software raid. It doesn't contain a RAID controller chip, but simply a standard disk controller chip with special firmware and drive. Boot up is done by it firmware but raid controlling is done by OS' driver (Windows) or kernel (Linux). I always advice everyone to go with hardware controller (with it own CPU, RAM and battery backup if possible). Yes, they are expensive but 4TB+ of data lost for some are more expensive than the cost of the raid controller. My favorite manufacturer is Adaptec and for home users a 128MB RAM on board should be enough. However if you have lots of clients (or ... example bittorrents concurrent downloads), you may consider 256MB+. [/QUOTE]

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