“Truth is a hard master, and costly to serve, but it simplifies all problems.”
So, how many of those 8TB NAS boxes do you have lying around to carry off-site once per quarter? One? Two? Unless you have a lot more than that (expensive!) that means you don't have any backups that go back further than a term or two? If that's the case, then you have a problem. What if the files you need to recover were important ones deleted a year ago (or 2 or 3). Yes, that happens. What happens if the single off-site archive you have fails to spin up or starts to throw errors? It happens. Disk-based backups are outstanding for speed, size, and recovery speed. They are not very good for long-term archive.
But, whatever woks for you. I care little about trying to change your mind on the matter. My aim is to provide sound advice for those who seek it.
If someone needs something more than a year old, they're out of luck. But then, that was the same policy when we used tapes too.
The law does require data be kept for more than a year here though in any case.
We use tape. We have about 50Tb of data storage and we back that up to a hard drive store on a DPM server, which then migrates longer term backups out to tape. We keep some of that data for 7 years due to financial and other requirements.
We may be at the stage where we decide to put long term backups in the cloud once our current tape system (2 LTO5 drives in a 50-tape library) reaches its natural end of life, but we don't think that this is quite mature and cost effective for our needs to justify ditching tape before then.
I am confused as to the stated benefits of tape, if you have a robust backup plan with other solutions?
For instance, our backups include VEEAM backups of VMs to a NAS in another building nightly (14 points), weekly backups to NAS in another buillding (4 points) Monthly backup to another NAS in same location as the nightly ones for achives and then 1 weekly in a fire safe and 1 weekly offsite at another school.
I cannot see how tapes would make that any better? From the OP POV I shouldn't be without tape - can someone explain why I would need it?
You are trying to put your way of working onto ours - we simply do not need archives of digital work more than a year old. We've never had a need. I've had 1 request in the last 8 years for data that we no longer had, and that was a lesson plan.
Last edited by nathan; 12th May 2014 at 12:43 PM.
SANDisk Enterprise SSD ( 4tb to start with ) and there is a road map for 8tb and 16tb Enterprise SSD's, not sure it relates to backups other than large capacities ??
It's here, the 4TB FLASH drive: SanDisk rips sheet from the Optimus MAX
Does that mean you will have to use the larger tapes such as per this article :
Last edited by mac_shinobi; 12th May 2014 at 02:34 PM.
I always advise..... always use more than one backup procedure / solution!! Backup your Backups .. offsite and onsite!!
You never know when Disaster may strike... and always test your recovery procedures... Be it from Tape, Hard Disk, Remote Storage, SAN, Offsite solution... whatever it is back it up and test recovery is a good way to stay safe. Here we Backup the local network to a SAN, which is NetAPP which is part of a failover cluster and mirrored. The NetApps are backed up - onsite to DotHill SAN's then that data is copied to DotHills at our other sites.
I think Tape Was and IS a good solution... However.... I think the modern way that seems to be popular is external Hard Drives - for those that Can't afford a SAN. Whatever the medium is.... there's always a failure rate and we as IT people need to make sure that those failures are easily recoverable.
Very little data in a school environment is actually that mission critical. Even less is protected by law. Where we do need to keep data longer, we have archival provision in both our on and offsite backups that take care of that need.
You post assuming yours is the only right way. In truth, as with many solutions, the answer a little less black and white. I find tape in the capacities required to be costly, slow, and a pain to manage. I can see why using it is necerssary when other more user friendly alternatives exist.
The most important thing to note about our data center - we're not Google and don't have Google's back requirements.
sparkeh (13th May 2014)
I think that this is a really important part of our jobs which is why it annoys me to see people criticising others because they are not "doing it the 'right' way" criticism which is due to their own inflexible thinking.
I don't use tape. I used to but don't anymore, its a PITA. Our curriculum data is backed up to external hard drives, then copied to a NAS in another building and another external HD to be taken offsite. It works for us so that's fine.
Sims data on the other hand is a different kettle of fish. We use our LA's offsite backup service for that.
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