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Posts Tagged Apple

Posts Tagged ‘Apple’

G RAID with Thunderbolt

Posted on: November 14, 2013 by Chris | No Comments

G Raid Thunderbolt8 Terabytes of storage, arranged over two disks configured for RAID 0, with Thunderbolt connectivity. What’s not to like?

This device is perfect for photographers, but even more so for video makers. I’ll be using this in tandem with Final Cut Pro X running on an iMac.

First impressions. Out of the box, plugged in and switched on, available on the desktop in less than five minutes. That includes time spent crawling under the desk to get at the spare extension sockets. Speed? I transferred four Sony SxS cards yesterday, as part of the normal video workflow to a standalone G-Raid device over a firewire connection.  These cards take about 16 minutes each. This standalone device will be the archive. From that device I transferred the entire set of data to the G Raid in five minutes. Outstanding, considering the slowest part of the chain was the Firewire connection.

Once the data was transferred, I fired up Final Cut Pro X on the desktop and imported the rushes as events, one event per day of shooting, two cards per day. To import the XDCAM data I needed the XAVC/XDCAM Plug-in for Apple (PDZK-LT2), download that here. One of the very desirable features of Final Cut Pro is that once you set up your project, it copies the rushes to a separate directory – you never work on the original set, so there is no chance of deleting, corrupting, destroying your original data. I like this feature a lot!

Inside Final Cut Pro, the access to data is so fast you wouldn’t know it’s not on the local disk. I’m very impressed wit this technology and it will become the mainstay of my editing set up. I’ll review Final Cut Pro in due course – once I’ve had a chance to put it through its paces.

 

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eSATA vs. Thunderbolt

Posted on: February 13, 2012 by Chris | No Comments

What is the difference between eSATA and Thunderbolt? Will one or the other become standard? Which one should I back? And what’s wrong with good old fashioned NAS over Ethernet anyway?

One of the hats I wear as a technologist is that of adviser to a small independent Television production company. A discussion we had last week centred around the viability of equipping a video editing suite against the expense of hiring it. The economics of that discussion are not the subject of this article, but the conversation did touch upon the different technologies available and the possible futures.

Photographers and Filmmakers have similar challenges around workflow and since these two industries are increasingly overlapping with the video capabilities available in modern DSLR’s it makes sense to discuss this storage question here. I wrote about the RAID storage solution I use for my photography last week, but that was obtained several years ago and although ethernet is fast, moving video data off a RAID and into an editing tool such as Final Cut Pro is demanding in ways that still photography just isn’t. What is required is super fast connectivity between storage and workstation. Fibre fits the bill, but for the photographer it is unnecessary. (It is appropriate for a professional video editing house using racked storage arrayed across multiple hard drives). For Photographers and Video makers, eSATA and Thunderbolt both offer very fast connectivity between storage and workstation. The problem here is that various vendors have adopted different technologies. G-Technology, the makers of the G Drive I raved about in my previous post use eSATA, and Promise, the makers of the Promise Pegasus solution have adopted Apple’s Thunderbolt technology.

eSATA boasts data transfer speeds of up to 200MB/second which is plenty fast enough to edit video. Compare with Ethernet at 125MB/second, Firewire 800 at 98MB/second, Thunderbolt weighs in with a staggering 1.25GB/second. Now be aware that data will only move at the speed the slowest component dictates, so if you are using a 7200 rpm disk drive it will deliver approximately 50-60MB/second. SSD drives on the other hand offer 100-500 MB/second depending on type. These figures are approximate and in the case of the traditional spinning disk drives, factor in the delay in locating the data on the disk.

At one level the debate boils down to identifying the slowest component on the network. If you’re going to invest in high speed data transfer and then use wireless to connect your laptop, you’ll see a data transfer of only 75 MB/second, making your investment in fast storage completely redundant!

So which one is king? Thunderbolt is clearly the fastest by a long way. It is also the newest which means it has the least support in the market at the moment. It does offer one very interesting capability though, which Apple have been quick to exploit. You can daisy chain Thunderbolt devices together in a way which has been commonplace in storage for years, but Apple have extended the principle to include other hardware components, notably monitors and desktop computers. This means that you can plug a Thunderbolt enabled storage component into your Apple Thunderbolt enabled monitor into your AppleMac Mini Server. Hmmm…. attach that server to your Ethernet LAN and you have a solution only limited by the speed of Ethernet. Install FinalCut Pro on the AppleMac Mini and you have all the speed that Thunderbolt allows.

On the other hand, eSATA boasts wider support, is plenty fast enough for local editing and substantially cheaper. You’ll need to buy an eSATA card or adapter to realise the full speed, but the drives all support Firewire 800 as a matter of course. As a photographer, I’d go with eSATA as the data speed is sufficient to make photo editing seamless. As a videomaker I would seriously consider whether my requirements justify the additional expense of Thunderbolt. Having said that, I wouldn’t underestimate Apple’s ability to push Thunderbolt to the forefront. They succeeded with Firewire, but at the moment, and this is to my mind a big disadvantage, the Mac Pro cannot support Thunderbolt. That support will be forthcoming when the next overhaul of the Mac Pro architecture is completed.

In conclusion, Thunderbolt is exciting, no question, but for my purposes, unless I win a lottery sometime soon I’ll be sticking with my ReadyNAS Ethernet based RAID and my eSATA back ups.

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