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Re: USB hard drives -- recommendations?




On Sat, 26 Jan 2019 03:15:37 +0500
"Alexander V. Makartsev" <avbetev@xxxxxxxxx> wrote:

> On 26.01.2019 2:28, Celejar wrote:
> > On Sat, 26 Jan 2019 01:09:59 +0500
> > "Alexander V. Makartsev" <avbetev@xxxxxxxxx> wrote:
> >
> > ...
> >
> >> If you value your data, my recommendation is to get inexpensive NAS with
> >> iSCSI, like Synology DS218j and run two disks in RAID1 for redundancy.
> >> This decision has many advantages, like:
> >> 1. You still will have your data even in case one drive fails or gets
> >> multiple bad blocks, so that 60Gb Virtual HD image will not turn out to
> >> be a punch card when you will try to use it as a backup.
> > RAID is for uptime, availability, performance - not ensuring the safety
> > of valuable data.
> >
> > https://www.raidisnotabackup.com/
> >
> > Backing up properly is the only way to safeguard valuable data. With
> > proper backups, your data will be safe with or without RAID. Without
> > proper backups, your data will not be safe with or without RAID.
> >
> > Celejar
> >
> >
> Well, James asked for advice on USB disk drive that will be used as
> storage for backups.

Ah, I think I misunderstood somewhat. I interpreted your recommendation
to mean a single copy of the data on the NAS, not that the NAS was a
backup target for data stored primarily somewhere else.

> It may seem like overkill, but I would prefer to be sure that my backups
> are safe and consistent, because there are many ways things could go wrong.
> 
> Speaking of RAID in general, I can see usefulness of URL you provided,
> but only as a guide to fight with "I have RAID, it works, so I can
> forget about it" kind of mentality of inexperienced people.
> Yes, backup is important, but it is also important to be sure that your
> backup will not fail you when you will need it the most, so using RAID
> with proper monitoring and servicing procedures is always better than
> just one drive.

Fair enough.

Celejar