Chris Murphy: Activity About Popular
Chris Murphy

Member Since:
March 9th 2013
158 Posts
100 posts
Sharing a thunderbolt raid drive between two new Mac Pros
by Nathan Sangster 6 years ago
We are looking to freshen up our 5 year old Mac Pro edit suites to the new Mac Pro coming out soon. We will be switching from FCP 6 to Adobe CS6 and I was wondering if one RAID drive with 2 Thunderbol
Re: Sharing a thunderbolt raid drive between two new Mac Pros
by Chris Murphy 4 years ago
I don't understand the proposed topology. The Sonnet adapter is connected to computers. Assuming you want 10GigE for all computers, you'll need three of them, one for each computer, with the mini conn
I/O scheduling in SAN
by Kamran Mirzoyev 5 years ago
Could anyone please explain to me which part of the SAN is responsible for doing I O scheduling Let's say when a Virtual Machine (Linux) residing within a server initiates I O request, is it a hypervi
Re: I/O scheduling in SAN
by Chris Murphy 4 years ago
The I O scheduler is a function of the kernel. For a VM arrangement that includes the guest and host VMs. It gets really tricky optimizing this because the caching policy for the VM makes a difference
thunderbolt shared storage ? What about USB 3.1 ?
by Bob Zelin 5 years ago
This industry is killing me. So many people seem to want a native thunderbolt shared storage system, even though there are countless options for 1G, 10G, and Fiber Channel - but NO, they want Thunderb
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Alex Gardiner liked this 5 years ago
Re: thunderbolt shared storage ? What about USB 3.1 ?
by Chris Murphy 4 years ago
The bigger confusion is USB 3.1 Gen 1 vs USB 3.1 Gen 2. Apple's USB-C uses USB 3.1 Gen 1, which is 5Gbps bandwidth, not the 10Gbps bandwidth offered in Gen 2.
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Pegasus R6 - 1MB Stripe size default?
by Brad Bussé 5 years ago
*edit - my unit is the Pegasus2 R6* I just plugged in my 12TB Promise Pegasus R6 to my nMP. It's 28% done with synchronization after a couple of hours. I'm using the utility to look at how it's config
Re: Pegasus R6 - 1MB Stripe size default?
by Chris Murphy 5 years ago
Weird. Anyway, this sort of thing requires RAID logs, and often kernel messages are helpful also. These days kernel messages get dumped into the system.log and can be filtered by typing the word kerne
6 TB drives internal on Mac Pro?
by Tom Durham 5 years ago
Greetings Earthlings, Just wondering if anyone knows how to find out if the new 6TB drives will work internally on older Mac Pros Late generation PPC and first generation intels We're thinking of turn
Re: 6 TB drives internal on Mac Pro?
by Chris Murphy 5 years ago
4KB alignment is a concern with outdated software. Mainly it's Windows XP era software, and some Linux utilities before 2007 that could have an issue. But it's long since patched for 1MB alignments on
Infortrend SAS RAID6 Running very slow
by Jason Huxley 5 years ago
Hi everyone. I have an old infortrend A08S-C2132 8 bay SAS CUBE and it's running very slow. At the moment I'm getting about 135MB a second from it according to both the AJA and BM speed tests. I'm run
Re: Infortrend SAS RAID6 Running very slow
by Chris Murphy 5 years ago
Spinning rust drives get slower as they get full, assuming the file system allocates sectors from outside to inside of the platter, which is usually how it works. And the difference is pretty signific
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move internal RAID
by Rob Alexander 6 years ago
Hi All, I'm upgrading my Mac Pro (2008) to a 2012 tower. In my old machine I have 3 x 1TB drives software striped to make a 3TB volume. Is it possible to straight swap them slot for slot into the new
Re: move internal RAID
by Chris Murphy 6 years ago
The advice to make a current backup before proceeding with any modification of an array is good. Apple software raid writes quite a healthy amount of metadata to each disk so it ought to be capable of
SSD or RAID Controller Issue?
by Christopher Stone 6 years ago
Hi guys! I m having a problem and hoping I can get some help. One of my RAID0 s (I have 3) continues to fail when I run CrystalMark. The other 2 have no issues at all. The RAID0 that I m referring to
Re: SSD or RAID Controller Issue?
by Chris Murphy 6 years ago
Without logs it's speculation why an array is failing. A generic "failed" error message isn't helpful. The controller should have something a lot more verbose than that, since its the one doing the co
Archiving: Keep a great lossless copy or not?
by Travis Landers 6 years ago
I will certainly show my ignorance at some point but I have reached a point in my reading where I was wondering if anyone would comment on something I am pondering.... Some of this is about archiving
Re: Archiving: Keep a great lossless copy or not?
by Chris Murphy 6 years ago
This is what we get for tolerating proprietary formats. Some project choose to record the final to film for archiving because they're solidly convinced in 30 or whatever years there will be no way to
NAS & OSX Mavericks
by Chris Heuer 6 years ago
Hello. I finally got a mac at work and am trying to keep it connected to the network drive I have all of my projects on. I connected using the smb prefix and had issues with the folder I mapped disapp
Re: NAS & OSX Mavericks
by Chris Murphy 6 years ago
Mucking with configuration files without understanding the problem isn't a good idea. It's like throwing spaghetti at a wall. Yeah you might resolve the current problem, but then end up with some othe
Super slow transfer time
by Dan Colins 6 years ago
During downloading of various formats, I experienced unusually slow transfers. I tried isolate the components and still had many problems. The problems seem to be when going to 2 different G-Raid Mini
Re: Super slow transfer time
by Chris Murphy 6 years ago
Use Blackmagic Speed Test from the App Store. Either post the result, or if you're convinced they indicate a problem or departure from the G-Technology specs then I'd call G-Technology and ask them wh
internal hard drive not showing up: what are my options???
by Nick Natteau 6 years ago
After not seeing my secondary internal hard drive on my 2008 MacPro desktop running Mavericks, I first verified that "hard drives" were checked in the Finder window. Then I ran Disk Utlity and discove
Re: internal hard drive not showing up: what are my options???
by Chris Murphy 6 years ago
One drive missing usually means it has failed or has been disconnected. Since this is raid0 (striped set) that would mean the entire volume is useless which is why it's offline. Formatting is not goin
How best to backup our new 5Big 20TB?
by Nick Tandavanitj 6 years ago
Hello, We're lucky enough to have a new MacPro (with 256GB) and 20TB LaCie 5Big as an update to our edit suite. And I was hoping someone could give some advice on how best to set this up for in relati
Re: How best to backup our new 5Big 20TB?
by Chris Murphy 6 years ago
Backup for the system+apps+user preferences = Time Machine, or Apple Software Restore (asr is the CLI command, accessible via Disk Utility for GUI). ASR creates a disk image that you can store on any
How Does Partitioning Impact RAID Arrays?
by Kevin Patrick 6 years ago
I'd like to partition my new RAID array (Pegasus2 R8 32 TB). I'm thinking I'd like to segregate video media from everything else. (audio, photos, etc) My reasoning is the make backups easy. Video will
Re: How Does Partitioning Impact RAID Arrays?
by Chris Murphy 6 years ago
Yes, sparse bundles can be used for Time Machine backups - this is how Time Machine backs up over a network. There are guides on the internet on how to create them with hdiutil. The problem is that on
zfs tuning
by John Heagy 6 years ago
I've been testing a zfs based NAS. Not much about zfs here and it was new to me. The system we're testing stumbled out of the gate, at least with our very aggressive B4M Fork growing file workflow, bu
Re: zfs tuning
by Chris Murphy 6 years ago
Btrfs is still under much development, so it's not production comparable to ZFS yet, but is getting closer to stable. The Btrfs single, raid0, 1, 10 code has been in the linux mainline kernel since 20
Checksums for entire AVCHD or Canon XF folders?
by Seth Goldin 6 years ago
Hi all, I'm looking to improve my post-production workflows, particularly at the point of ingestion. I work with a variety of cameras and formats, including codecs not neatly wrapped in QuickTime wrap
Re: Checksums for entire AVCHD or Canon XF folders?
by Chris Murphy 6 years ago
If the idea is to avoid most storage stack related file corruption and make it easy to use, the solutions are: a.) use enterprise drives, since they have an order of magnitude fewer unrecoverable erro
Pulled RAID 5 drives have very slow read speeds.
by Robert Lee 6 years ago
I just pulled 8 HUA721010KLA330 1TB drives from a RAID 5 because I'm upgrading to 2TB drives. I tested the file benchmark using HD Tune Pro. The read and write speeds range greatly from these identica
Re: Pulled RAID 5 drives have very slow read speeds.
by Chris Murphy 6 years ago
Yes good point and actually it's likely SMART testing won't work through the USB bridge chipset anyway to see if there are reallocated or pending sectors. This performance sounds like something is cau
ATTO R680 + Sans Digital TR8X-B RAID degraded after 3 days
by Reinis Traidas 6 years ago
I've recently built a low-cost storage solution for video editing and grading using a Sans Digital TR8X-B 8-bay SAS enclosure, coupled with the ATTO R680 controller and 8 WD RED drives. Yes, I know th
Re: ATTO R680 + Sans Digital TR8X-B RAID degraded after 3 days
by Chris Murphy 6 years ago
For it to become degraded in 3 days isn't normal. If the firmware update explicitly fixes a problem that's the direct result of the array going degraded, then great. But the only way you'd know this i
Inconsistant Error -36 when copying files
by Tim Wingert 6 years ago
Hello! In transferring files from my internal RAID to an external drive, the "some data in File XXXXX cannot be read written" error -36 keeps popping up. The thing is-- that sometimes I CAN move the f
Re: Inconsistant Error -36 when copying files
by Chris Murphy 6 years ago
Looks like disk4 is the logical device created from disk0s2, disk1s2, disk2s2 as raid0. The previous error message: Jan 23 10:06:54 edits-mac-pro kernel 0 : AppleRAID::completeRAIDRequest - error 0xe0
Mavericks Server AFP vs SMB2
by Morten Ranmar 6 years ago
Apples new server software defaults to SMB2 for file sharing, but while this is great for Windows clients, I experience trouble on Mac Mavericks clients with multiple file copying, and refreshing find
Re: Mavericks Server AFP vs SMB2
by Chris Murphy 6 years ago
How does it manifest And do you get any relevant console messages on either server or client
Two new Mac Pros, two Thunderbolt 2 RAIDs, one Thunderbolt Bridge ....
by Neil Smith 6 years ago
Been testing Thunderbolt 2 Bridge networking between two new Mac Pros ... a couple of 6 core nMPs with D500s arrived today and I upgraded them both to 64 GBs RAM each - so identical machines with max
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Jack Zahran liked this 6 years ago
Re: Two new Mac Pros, two Thunderbolt 2 RAIDs, one Thunderbolt Bridge ....
by Chris Murphy 6 years ago
I'd think TSO overhead would be less than the layers that are normally done on hardware that have to be done in software with this implementation. The lower block size translating into smaller packet
Pegasus2: "superfast"?
by Alex Gerulaitis 6 years ago
I loved the look of them, very "pro". The 8TB R4 box for $1.5K It's also cheap. (Not so much with R6 and R8 versions though.) "World's first Thunderbolt2 storage" - would be a nice match to newer Macs
Re: Pegasus2: "superfast"?
by Chris Murphy 6 years ago
FusionIo PCIe flash is at 1.5GB s per card. Not accounting for encoding, yes two in a raid0 will saturate one TB2 controller. I haven't tested Core Storage "fusion drive" in anything other than a cons
OWC Raid solution
by Daniel Schultz 6 years ago
I'm in the market for an entry-level multi-drive raid solution (with 4 drives or so) I spoke with a tech person at Other World Computing (they always seem knowledgeable and helpful). I was planning on
Re: OWC Raid solution
by Chris Murphy 6 years ago
Additionally, I'd test the enclosures set to JBOD (if that's possible), and test just one disk in each enclosure with software raid0. Then rebase with enclosures set to raid1, and then remake the soft
NFS does not work with OS X Mavericks
by Bob Zelin 6 years ago
so my little trick for getting ADD SAN Location to FCP X does not work with OS X Mavericks. Only up to OS X 10.8.5. I am very disappointed. There is a note about problems on the Bresink website. Hopef
Re: NFS does not work with OS X Mavericks
by Chris Murphy 6 years ago
OK so I've played with this on 10.8.5 and I'm getting some fairly craptastic behavior. Without sudo I can cp read or write a file from to an NFS share without difficult, and with OK performance. Howev
new Macs and reverting to earlier operating systems
by Bob Zelin 6 years ago
boy, this is frustrating. The new Mac Mini's ship with OS X Mavericks. A popular piece of software that we use in our business does not yet support OS X Mavericks, and to my dismay, I can't seem to ba
Re: new Macs and reverting to earlier operating systems
by Chris Murphy 6 years ago
Well...at present the firmware is rather permissive. It'll run any EFI application or OSLoader thrown at it. Where it gets possibly concerning is if when Apple applies what they've done with iOS to OS
LTFS illegal characters from a Mac
by Ben Pohl 6 years ago
Hi All, I'm successfully using an HP LTO5 Ultrium 3000 to archive old projects from our network. But every once in a while a backup will halt because some filenames have illegal characters that LTFS w
Re: LTFS illegal characters from a Mac
by Chris Murphy 6 years ago
LTFS uses XML spec 1.0 encoding, which itself can use either UTF-8 or UTF-16. OS X uses UTF-16 encoding for file names, with a few illegal characters. So " is a legal character in LTFS, but it's not l
OSX 10.9 and codecs
by Erik Lindahl 6 years ago
Apple is finally "pulling the plug" and starting to seriously move away from QuickTime to AV Foundation in 10.9. For the end user a huge boon is the loss of certain codecs, amongst others are RGB NONE
Re: OSX 10.9 and codecs
by Chris Murphy 6 years ago
Yes, from an archiving standpoint, any data that uses proprietary encoding means you have to put effort into aging the content to guard against it becoming stuck in time. So long as those encodings ar
Monitor Calibration Across Multiple Systems...
by Kyle Rebar 6 years ago
Hey Creative Cows, I need to color calibrate three separate systems for consistency at work. We have two 2012 iMacs and a slightly older MacPro with a Cinema HD display. Doing standard calibrations on
Re: Monitor Calibration Across Multiple Systems...
by Chris Murphy 6 years ago
Ideally what you want is a display that does internal calibration so that you're not depending on the lower quality calibration produced via curves in the video card. The NEC PA series are quite nice
Periodic network drop and recovery
by John Heagy 6 years ago
We are testing a NAS offering and are seeing periodic network drops and recovery. The storage is supporting 16 ProRes 140 ingest pretty well except for periodic drops to zero for 1 2 sec than a 40Mb s
Re: Periodic network drop and recovery
by Chris Murphy 6 years ago
This is what network protocol over what speed physical link It seems really straight forward to narrow down whether it's the sending computers that are hanging up for some reason, or if it's the NAS t
Proper storage solution. Promise Pegasus?
by Jack Jackson 6 years ago
Hello, i'm a freelancer in editing, motion design and compositing working at my home office. My current setup is a 2.3GHz i7 MacBook Pro with a 256GB SSD only for the OS and the applications. To stay
Re: Proper storage solution. Promise Pegasus?
by Chris Murphy 6 years ago
The difference between the 10Gbps spec and real world experience is due to overhead. The 8b 10b encoding alone causes a 20% hit. Although, I'm surprised at some of the benchmarks cited in this article
mini-SAS on Thunderbolt?
by Brad Bussé 6 years ago
I'm upgrading another "new" Mac Pro and need to get an external RAID. Knowing that the new Mac Pro release is imminent, and the new platform will have TB ports but no internal PCIe slots, I'm not sure
Re: mini-SAS on Thunderbolt?
by Chris Murphy 6 years ago
Xserve RAID has two options: verify and rebuild parity. Verify reads data and parity chunks, and reports mismatches. Rebuild reads data chunks and writes new parity chunks. Verify is the one to use re
CompactFlash Extreme Pro vs SDXC Memory Card Extreme
by Craig Alan 6 years ago
SanDisk 64GB CompactFlash Memory Card Extreme Pro 600x UDMA vs SanDisk 64GB SDXC Memory Card Extreme Pro Class 10 UHS-I Are they both as good. CompactFlash way more expensive. To be used in 5D. Mac Pr
Re: CompactFlash Extreme Pro vs SDXC Memory Card Extreme
by Chris Murphy 6 years ago
Aha! I wrote getting CF to perform worse than SD Reverse that. Somehow getting SD to perform worse than CF. Panasonic just came out with a mini version of their P2 cards. If I had a bunch of the very
2013 Mac Pro - In action
by Christian Schumacher 6 years ago
http: www.youtube.com watch v=wShNx6cdk_8
Re: 2013 Mac Pro - In action
by Chris Murphy 6 years ago
Perhaps I'm missing something. I'm only seeing GigE Presto PCIe cards. i find it rather clunky to put have to buy a PCIe expansion chassis, and put in a 10GigE PCIe card, in order to get 10GigE on a T
Adobe support says Thunderbolt external is not "supported' by premiere
by Jorge Graupera 6 years ago
Hi Everybody. I've been using Premiere for a few years now with a 2009 iMac using a FW800 external as a scratch disc holding all my CANON DSLR footage assets. Performance was good and stable but I wan
Re: Adobe support says Thunderbolt external is not "supported' by premiere
by Chris Murphy 6 years ago
The original statement mentioned array size as the factor determining performance, rather than number of disks, and it also didn't distinguish between reads and writes. It's true that there is a raid5
Showing film on projection system - color and look way off.
by Anthony Susnick 6 years ago
I just got back from testing my film at a venue I will be showing it at next week. It was shown on a large projection system. The laptop monitor showed the film perfectly but on the screen the picture
Re: Showing film on projection system - color and look way off.
by Chris Murphy 6 years ago
I think the responses thus far are heading in the right direction, it's probably the projector. Have a tech go through the projector's OSD menu, and video or photograph all of the current settings (ce
iMacs and Fusion Drives
by Howie Young 6 years ago
For those editors using a 2012-2013 iMac with a fusion drive, have you had any issues or problems with the fusion drive while editing with FCP X Is there a way to partition the SSD portion of the driv
Re: iMacs and Fusion Drives
by Chris Murphy 6 years ago
"Fusion Drive" is a term like "Bootcamp" that encompases several different things, it's not a single thing or product. A Fusion Drive is made by leveraging CoreStorage, which is sorta like the logical
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