Raising the speed over Ethernet should be doable though, by using 2 LAN ports (even my inexpensive QNAP has 2x1Gbps) or by going 10Gbps (available at higher prices).įor a Mac, I'm not sure if it makes sense.I am loving using _init.php to set stuff up and keep some constant info DRY. My QNAP is using EXT4, so it has to rely on RAID scrubbing - only works with RAID 5&6. Some filesystems ( Btrfs, ZFS, ReFS, and very few others ) detect data corruption natively. Even USB 3.0 can be limited by the speed of HDD. Thunderbolt is limited by the bandwidth of the disk drives. Some filesystems ( Btrfs, ZFS, ReFS, and very few others ) detect data corruption natively. If you want speed I guess Thunderbolt is the way to go.ĭetecting silent errors is a nice feature. I'm only getting a bit over 100MB/s (*) over Ethernet, single LAN connection not that I'm complaining. And I also like how it can detect silent errors through periodic RAID scrubbing. I only recently started to use RAID at home - I bought an inexpensive 4-bays QNAP NAS, with RAID 5 for data storage. (*) NOTE: those high transfer rates for SDD or HDD occur with large files. I have the OS + apps, and, LR catalog and previews on the SSD. For the SSD, it's over 300 MB/s, R+W (*). For HDD, it is about ~200 MB/s to 110 MB/s (depending on the tracks, outer vs inner, I guess). The transfer rate seems to be limited by the SATA drives themselves. Since late 2016, I use a Thunderbolt 2 enclosure, with 4 slots, as 4 independent drives, "JBoD". And, since then, I never used RAID-0 or any RAID what so ever (at home). After that, I bought 4 TB and 6 TB drives, with 3 or 5 years warranty. Since I already a good enough back up routine, I did not loose any pictures because of that failure. But, all data was lost on the dead 6 TB RAID-0. At first, the 6TB looked convenient as I needed more than 3 TB. I had 6TB as RAID-0 over 2 x 3TB, in an off the shelf external drive unit (firewire 800). Indeed, I meant RAID-1 as you have guessed.Īnd, I was once burnt by a RAID-0 installation. On the contrary, it's the least reliable. The simplest RAID, RAID-0, is most probably more reliable (if it is not dependent on the controller of the enclosure). It is a lot more predictable, efficient and manageable than Time Machine. You will not regret learning how to use rsync. If you are afraid of Terminal, you can look at "AR rsync" (GUI) or "grsync" (GUI, open source, but, not supported now). Just calculate $/TB and you will see.Īs a software person, I recommend using " rsync" to backup data files (pictures, multimedia, etc). Large drives - with up to 10 TB now - are affordable, and, less expensive than a RAID solution.Also, disk drives from the same batch tend to fail at about the same time (making RAID recovery impossible). Most RAID solutions are not recoverable if you do not have an identical RAID drive enclosure to put the disk drives in. Each step in the chain of a data storage solution is one more possibility of failure. RAID (in a NAS or DAS) is more complex than a single drive.(One extra copy should be stored off-site and rotated). They can reduce those risks: hardware failure, accidental deletions, theft, fire, etc. RAID is less reliable than 2 or 3 external drives, with discipline of doing incrementail backups after (during) each session of work/editing. Marj, my wife and best friend, says my passions are obsessions. I'm not that particularly bothered about the benefits of ethernet connectivity within the home, though it would be nice, I'm more concerned about the read and write speeds from computer to external storage.Īny info from real world usage would be a great help in my decision making process. I've decided to buy a new iMac before the end of the tax year, and am now deciding whether I should buy another raid DAS which would connect by USB3 or Thunderbolt, or a Raid NAS. The large multi layered files can take up to 20+sec to save, this is something I'm not used to as the smaller 5D2 files would save 'instantly' to the internal or external storage. The major problem now is saving image files to my external storage (WD Raid firewire800 connected) after work in PS. I've upgraded the mac's internal storage from a 1TB HDD to a 500GB SSD and the mac works really quickly now. My recent acquisition of a 5D4 with its large files and my 2010 iMac with USB2 and firewire 800 has highlighted how slow moving files from mac to external storage can be.
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