Re: SAS tape drives

[Eduardo Horvath <eeh%NetBSD.org@localhost>]

On Wed, 11 Dec 2013, Mark Davies wrote:

> On Wed, 11 Dec 2013, Eduardo Horvath wrote:
> > Last time I fiddled around with the LSI MegaRAID stack it did not
> > provide any sort of transparent access to attached devices.  Can
> > you create a LUN with the tape device?
> > 
> > You might have more success with the LSI MPT stack.  That at least
> > provides transparent access to the target devices.  I don't know
> > whether mpt hooks into NetBSD's scsipi layer in a way that it will
> > attach non-disk devices, but I suspect it would.
> 
> I used the MegaRAID card as that was what we had lying around but I 
> could buy something else.
> 
> I found this: 
> https://www.ascent.co.nz/productspecification.aspx?ItemID=413461
> but that seems to use the mps driver on FreeBSD and NetBSD doesn't 
> have it.  Any guess on how hard it would be to port?

Keep in mind that some of LSI's chips can run either MegaRAID or MPT, you 
can download whichever firmware image you want.  Since MegaRAID requires 
more resources than MPT, I think you could probably "downgrade" the card 
to mpt.

Eduardo