[talk] Climate Mirror

Assaf Rutenberg assaf at eml.cc
Wed Dec 14 14:46:33 EST 2016

As far as maintaining a non US mirror or storage space,  i am in the midst of moving to Ecuador and can reliably maintain a NAS/Server down there,  albeit with the slower connections afforded in South America,  if someone can help me set one up.  I think i even have a box of 4TB drives packed away that i could use. I'll be back in the States early in January for a month or two and will make it to the next nyc-bug meetup to see if there is any way i can be of help. 


On December 14, 2016 2:31:48 PM GMT-05:00, Pete Wright <pete at nomadlogic.org> wrote:
>On 12/14/16 11:28 AM, Isaac (.ike) Levy wrote:
>>> On Dec 14, 2016, at 2:23 PM, Pete Wright <pete at nomadlogic.org>
>>> On 12/14/16 11:15 AM, Thomas Levine wrote:
>>>> The data don't need to be online; save them to a redundant bunch of
>>>> cheap hard drives (or maybe tapes), and distribute them among lots
>>>> bookshelves. They can even be slow and small hard drives pulled
>from old
>>>> computers; we need to write to each one only once, we might need to
>>>> from each one once, and we otherwise only need to turn them on once
>>>> every couple years to make sure that they're still intact. Maintain
>>>> website with a list of the datasets, the datasets' checksums, and
>>>> contact information for the people with the hard drives on their
>>>> bookshelves.
>>>> Note that this is my opinion only on how this project could be
>>>> implemented. I don't know enough about the datasets or the likely
>>>> effects of geopolitics on their implementation in order to comment
>as to
>>>> whether I think the project should be implemented.
>>> not to nit-pick but i would strongly recommend *against* using HDD's
>in this manner (magnetic spinning ones, or SSD ones).  Drives are not
>designed to reliably store data cold like this mechanically or
>electrically.  This is why tapes are still in use to this day - they
>*are* designed for cold store.  And if you do hit a bad sector it is
>quite possible to skip that sector and continue reading data.
>>> This is coming from quite a bit first-hand experience where I've
>lost data-sets which were in cold-storage on HDD's for about a year
>that were totally lost, versus data on tapes which were in cold-store
>for around 5-7years where we had few problems recovering our assets.
>> Hrm.  You may have put the silver bullet in my previous post.
>> Pete: any thoughts on mitigating this effect by using ZFS mirrors? 
>Perhaps even increasing the block mirror count across disks, so even on
>one of the mirrored disks there are 2 mirrored blocks?
>> I mean, one crappy way to test this is to just do it and wait a year
>tbh - i'd be most concerned about mechanical issues on magnetic HDD's.
>Unlike a tape where I can physically forward the tape to a new sector
>I run into a problem (something i've had to do!) I have seen my fair 
>share of drives sit idle for a period of time only to refuse to spin-up
>when i tried to revive/recycle them.
>Pete Wright
>pete at nomadlogic.org
>talk mailing list
>talk at lists.nycbug.org

Sent from my Android device with K-9 Mail. Please excuse my brevity.
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