Buying new Xraid

[Kaspar Kallas]

But how about SATA 16 drives raid 10 (two 8 drive raid0’s) should deliver 240MB/s @ the low end – this should be enough with safety margin right?

Plan for now is to buy the quad mac and start working on shake project over gigE to my cuurent dual 2.0 with attched raid0 8 drives (I did capture 1h and 10 minutes on that and it did work fine)

and when other HW follows – I will upgrade
I do not want to buy hyper expensive and one leg in the grave SCSI drives

-Kaspar

[Kaspar Kallas]

So far I have made my business by purcahasing things that I can start using from the day that they will arrive but also will work in two years whan some of the components have been upgraded – I do understand this is pretty much rocket science (and its fun to push the technology to it’s limits)

Just that I have always thought that magic Xraid will make my problems go away – apparently it’s good – but not good enough

-Kaspar

[Luke Maslen]

Hi Kaspar,

Yes, I would expect 16 SATA drives to be adequate especially if they are SATA II drives. The Quad Mac isn’t available yet and nor are PCIe versions of the DeckLink HD series cards but they’re coming soon. Hopefully by the time you can obtain a Quad Mac, these cards will be available as well as PCIe SATA cards and also PCIe SCSI cards.

SCSI disk are more expensive and the increasing reliability of SATA may well mean that it’s days are numbered. However I don’t expect SCSI to die as a technology at least for a while as it is still a tidy way to provide low cost, high speed connections to external devices, such as a bunch of SATA disks housed in a SCSI chassis.

Regards,

Luke Maslen
Blackmagic Design

[Kaspar Kallas]

OK some quircks in the plan:

So far I have been using my dp 2.0 to capture straight to disk from F750 as 10bit 1080i 50 or 25psf – I have fife disk raid 0 and never have had any raid problems (insert all supersticus rants here that this luck will prevail)

Now I need to capture RGB and need a bigger raid hopefully will have some PCIe raid cards by spring time – rocketraid is very promising, So if I decide to build raid10 by using HW raid0 and softraid raid1 and loose a disk then the rebuidl will take forever (at least longer time that I will have to fix the problem on the set)

Now huge has background rebuild (can it be paused) so I can continue my work without redunacy while capturing and rebuild whenever I can?
Or this will be no help because all my data is still at risk while the rebuild has not finished?

-Kaspar