[Admin-discuss] Second Backup Machine
Hey, This came up on IRC yesterday, just thought it might be worth mentioning here. Severus (our backup machine), is going to be hosted in over in CSD soon, so is it worth keeping a second backup machine in the room aswell? Another severus would cost about €3k, so we have to do it for less than that. We have a p4 poweredge tower we bought to do desktop machine type stuff, but it has two 500gb disks and a raid controller, so we could buy another 2 disks for about €120. In raid 5 that would give us 1.5tb - severus is currently using 800gb, so 1.5tb should provide enough space based on our current usage. Is it worth doing this? a. -- Andrew Harford System Administrator, DCU Networking Society Equipment Officer, Societies & Publications Committee During high school, I played junior hockey and still hold two league records: most time spent in the penalty box; and I was the only guy to ever take off his skate and try to stab somebody. --Happy Gilmore
On 5 Mar 2009, at 20:15, Andrew Harford wrote:
Hey,
This came up on IRC yesterday, just thought it might be worth mentioning here.
Severus (our backup machine), is going to be hosted in over in CSD soon, so is it worth keeping a second backup machine in the room aswell?
Another severus would cost about €3k, so we have to do it for less than that.
We have a p4 poweredge tower we bought to do desktop machine type stuff, but it has two 500gb disks and a raid controller, so we could buy another 2 disks for about €120. In raid 5 that would give us 1.5tb - severus is currently using 800gb, so 1.5tb should provide enough space based on our current usage.
Is it worth doing this?
I think so. A couple of years ago, the plan/hope was to have one set of backups on our network, and another set in a different physical location. Reasoning: * Fast access to backups for recovery purposes - both in terms of network speed (yay, gig-e!) and physical access. * Easy to give users NFS access to their backups, no futzing about with VPNs or remote NFS mounts. * Remote backups are slower to access (network, physical) but physically safer as they're out of the building. For 120 euro, I can't see why we wouldn't want to do this. It's up to you guys whether the work involved is worth the return.
On Thu, Mar 05, 2009 at 08:27:32PM +0000, Charlie von Metzradt wrote:
On 5 Mar 2009, at 20:15, Andrew Harford wrote:
Is it worth doing this?
I think so.
A couple of years ago, the plan/hope was to have one set of backups on our network, and another set in a different physical location.
Reasoning:
* Fast access to backups for recovery purposes - both in terms of network speed (yay, gig-e!) and physical access. * Easy to give users NFS access to their backups, no futzing about with VPNs or remote NFS mounts. * Remote backups are slower to access (network, physical) but physically safer as they're out of the building.
For 120 euro, I can't see why we wouldn't want to do this. It's up to you guys whether the work involved is worth the return.
The bottleneck with severus is that it's raid controller is garbage, and it's disks aren't much better. To put this in context the last full backup of /storage we did from minerva -> severus took about 42 hours (the nightly incremental types take ~6 hours generally) So, i'm not convinced that it'll be any slower over the network. In terms of work it should be fairly easy to setup, and not a huge effort to maintain. -- Andrew Harford System Administrator, DCU Networking Society Equipment Officer, Societies & Publications Committee If my calculations are correct, when this baby hits eighty-eight miles per hour ... you're gonna see some serious shit. --Doc Brown
On Thu, Mar 05, 2009 at 08:15:27PM +0000, Andrew Harford wrote:
We have a p4 poweredge tower we bought to do desktop machine type stuff, but it has two 500gb disks and a raid controller, so we could buy another 2 disks for about €120. In raid 5 that would give us 1.5tb - severus is currently using 800gb, so 1.5tb should provide enough space based on our current usage.
Bought the disks for this today. a. -- Andrew Harford System Administrator, DCU Networking Society Equipment Officer, Societies & Publications Committee I saw a strange thing today. Some rebels were being arrested. One of them pulled the pin on a grenade. He took himself and the captain of the command with him. Now, soldiers are paid to fight; the rebels aren't. It means they could win. --Micheal Corleone
On Mon, Mar 09, 2009 at 06:23:43PM +0000, Andrew Harford wrote:
Bought the disks for this today.
The replacement for the broken disk arrived during the week, I've got it setup, will get it started taking backups next time I get into the hub. a. -- Andrew Harford System Administrator, DCU Networking Society Equipment Officer, Societies & Publications Committee I spent my whole life trying not to be careless. Women and children can be careless. But not men. --Don Vito Corleone
On Sat, Apr 04, 2009 at 01:42:05AM +0100, Andrew Harford wrote:
The replacement for the broken disk arrived during the week, I've got it setup, will get it started taking backups next time I get into the hub.
Finally found the time to finish setting up all the backups today, expect to have it all running tomorrow - mysql is being a cunt though. a. -- Andrew Harford System Administrator, DCU Networking Society Equipment Officer, Societies & Publications Committee All the ways you wish you could be, that's me. I look like you wanna look, I fuck like you wanna fuck, I am smart, capable, and most importantly, I am free in all the ways that you are not. --Tyler Durden
On Sat, Apr 11, 2009 at 03:26:15AM +0100, Andrew Harford wrote:
Finally found the time to finish setting up all the backups today, expect to have it all running tomorrow - mysql is being a cunt though.
Backups ran last night. Battle against mysql won, etc. a. -- Andrew Harford System Administrator, DCU Networking Society Equipment Officer, Societies & Publications Committee You're not your job. You're not how much money you have in the bank. You're not the car you drive. You're not the contents of your wallet. You're not your fucking khakis. You're the all-singing, all-dancing crap of the world. --Tyler Durden
participants (2)
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Andrew Harford -
Charlie von Metzradt