[Adam Levine]

I’m going to go through some of last autumn’s threads again, but my impression is that the OpenCL problems are being experienced by people with mobile video cards. I’ll report back if I can piece anything together.

In any event, even if it is limited to mobile chips, how has Adobe not dealt with this yet? Their whole pitch to us for the subscription model was that this stuff would get fixed quickly, not linger. This is not the only bug that has stuck around for several versions.

[Adam Levine]

These would be 12 drives per array (24 total), so I would still have 30 TB per array with the 3 TB Ultrastars, right? Plus 2 spares in the closet.

Right now, my ancient port multiplier RAID gets 550+ MB/sec on read/writes, though more like 650+ when empty, which it never is. I’d love to get something that is in the ballpark of a GB/sec. With RAM and drive space/speed, I always try and get more than I think I’ll need, because I always need more. I like for the backup volume to be as fast as possible as well, as sometimes I dump a few TB onto the media RAID from a shoot and I’d like it backed up quickly so it’s not slowing me down for too long.

What do you think generally of Areca hardware? How does it compare to ATTO?

Should I favor 2x 12-port cards over 24-port?

Thanks again

[Adam Levine]

Thanks Simon.

Not sure I trust RAID 6 enough to be the only means of recovery. In your opinion, is that the most secure RAID level?

I get your point about Time Machine. When drives go bad, I have had to swap in a spare, rebuild the RAID 0 and copy the files back from the Time Machine volume (or vice versa). Generally, this goes pretty quickly with 10-drive RAIDs, but still not good on a tight deadline. This is a function of RAID 0, though, not Time Machine, unless you are suggesting a working mirror is a better choice

As for your suggestion of something “separate/redundant”:

• Are you suggesting that I have a working mirror so I can just switch over when something goes down?
• What would you suggest as the hardware setup? I love rsync, but I’m not sure what you mean exactly on the hardware end. I need about 30 TB of high speed media array and the same for backup, which means two RAIDs, right? But you say at the top that I lose 6 drives in the 2 RAID setup. Could you go into more detail?
• Do you think I’d be better off with 2 PCI cards with 12 drives apiece? I’m beginning to think the ARC-1882IX-24 is overkill as it is PCIe 3.0 and the extender in the RAID case is only 2.0

Thanks

[Adam Levine]

Yes, turned out, one of the drives in my 20-drive RAID was failing, though there were no actual errors for some time, just intermittent weird behavior like this. All tests and diagnostics came up with nothing. What I did eventually is stress the hell out of the RAID until the drive finally died, and then I figured out which one it was (of course, it was the second to last drive I checked).

Anyway, been running smoothly for a few weeks now

[Adam Levine]

In case anyone cares, I’ve narrowed it down to the Multibridge Pro, either hardware or drives.

[Adam Levine]

[Steve Eisen] ”
With this many drives, you need to run RAID 6! If 1 drive fails, everything is lost.

Have you gone into your Energy Saver and unchecked Put the hard disk(s) to sleep when possible?”

Thanks for the response, Steve.

I run a RAID 0 on my media array, and RAID 5 on the backup array (single Time Machine volume). I figure that’s enough safety for media. I prefer the clean stripe for the media array.

But in any event, that setting in Energy Saver was the first thing I looked at. But it happens every time I press play, not just when I’ve been dormant for a while, so I don; think it could be a spindown issue.

[Adam Levine]

Thanks Paulo. I’ve never used VHS professionally (indeed I have not touched a VHS tape since the 1990s!), so I’m somewhat at a loss here.

Is there any way to tell if a tape is SVHS from the casette? These are archival tapes from the 80s, so it is unlikely I can find the person who shot them, or whether they would remember even if I could.

Thanks for the TBC reminder, I forgot to order one from the rental house.

[Adam Levine]

Thanks for the reply. The Multibridge has no “C” connector, I’m going to try the “Y” and “B-Y” and see where that gets me with the proper settings.

Thanks again

[Adam Levine]

FWIW, I have changed my Video Preview settings to “Digital Cinema Desktop – Raw” and the error has gone away. I had previously tried “Digital Cinema Desktop – Full Screen” and “Digital Cinema Desktop” which both gave me crashes and, as I noted previously, other weird problems like my menu bar disappearing.

Hopefully, problem solved; thanks to all for helping

[Adam Levine]

Like I said, I already tried transcoding, that was the firt thing I looked at. I’m pretty sure this is related to DCD Preview