Archived posting to the Leica Users Group, 2015/09/27

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Subject: [Leica] Backup hardware: USB3 HDD
From: abridge683 at fastmail.com (Adam Bridge)
Date: Sun, 27 Sep 2015 13:52:12 -0700
References: <23120979.551337.1443377992962.JavaMail.root@vznit170064.mailsrvcs.net>

I agree with Frank. Backups require a variety of solutions. Having a ?direct 
connect? hard drive is a fundamental part of that solution. Having an 
off-site backup is another. There are a variety of solutions for this as 
well. I?ve been using arq software to backup my images to Amazon?s ?Glacier? 
storage although I could have used any of the Amazon S3 storage tiers as 
well. Depends on how quickly you want to be able to restore. Since I?m 
unlikely to need to download on a moment by moment basis Glacier, which uses 
off-line storage, is a reasonable bet. It seems reasonably affordable. 
Amazon knows a lot about secure storage solutions and they won?t use my 
images to sell me ads or market me. 

Virtually all my images live on a large Promise Pegasus Thunderbolt 2 
external RAID. I back that up to a Drobo. This doesn?t entirely solve the 
image integrity issue, however. I?d like to have a check-sum to verify each 
image against and a more rigorous file system than Mac OS X currently 
employes. I?m hoping that in the future Apple will create a file system 
built around data integrity like ZFS. But this seems unlikely to me as Apple 
focuses more and more on iOS products. I suppose I could build a Linux box 
with ZFS but I?m beyond the place where that seems interesting to me and it 
doesn?t solve the problem on the Mac. And I don?t do Windows.

If we?re going to keep terabytes of data around we have to care about 
keeping it reliable. It?s just a different part of the game. I wish the 
hardware and OS guys would really focus on this but as a selling point to 
consumers it isn?t important.

Adam

> On Sep 27, 2015, at 11:19 AM, Frank Filippone <red735i at verizon.net> 
> wrote:
> 
> Frys Electronics has a Western Digital 5TB external USB3.0 drive on sale 
> for $120. This is a massive amount of storage (in Leica M240 terms, about 
> 200,000 raw  images). If you are looking for a backup HDD, this is a cost 
> effective solution.
> 
> Please, no outbursts of WD is no good, brand Z is better.  Or some techie 
> version of why you should only use NAS drives.  This is a simple, cost 
> effective, low tech way to backup your computer.



Replies: Reply from mark at rabinergroup.com (Mark Rabiner) ([Leica] Backup hardware: USB3 HDD)
In reply to: Message from red735i at verizon.net (Frank Filippone) ([Leica] Backup hardware: USB3 HDD)