I'm working on a proposal for work that might go ahead this summer and as part of it I am looking at our storage and backup needs.
Basically, we currently have about 1.2TB of data, of which half is important and backed up daily/incrementally. The other half is more 'archive' and therefore backed up monthly, with incrementals weekly.
We're wanting to move to a properly virtualised system, and as such we want a central storage device of some form. However, there are so many different types, etc... it is making my head spin.
Also, we need to sort out a backup solution. At the moment we have a DTD system and it is not as robust as I'd like. Firstly, BackupExec 11d is terrible in my experience - catalogues messing up etc and causing issues.
So, I'd like suggestions in this arena too. We have multple buildings, so a DTD system is fine from a data recovery point of view. Also, am I right in thinking that we should go with SAS for the main storage, and then a SATA device for the backup?
I'm thinking that I should spec for the data to double within our 4-5 year period of life. So, the main storage device needs, rounding up, 3TB for storage of data and then we would have around 15 VMs running, which I'd give around 100GB per server. So, a further 2TB (again rounding up). So total of around 5TB.
Also, am I right in thinking that we should go with SAS for the main storage, and then a SATA device for the backup?
I'd favour spending out (maybe up to £1,000, depending on how many disks you want to connect) on a decent hardware RAID card over spending extra money on faster harddrives - something with a large enough cache to let the disks be used in an efficient manner.
What should we be looking at for backup?
Slower, cheaper, larger disks will be fine, and there's no point in using hardware RAID. Personally, I'd simply build my own server, but you can buy a server pretty reasonably from Dell without their disks and put your own disks in without voiding your warrenty. For software, I'd use rsync for backups, which allows you to mount backed-up files as read-only file shares - no need for users to come to you for restores, they can simply copy their previous versions of files from the backup server.
I've thought of getting a Drobo B800i for the backups, with 8x 2TB drives. And for software use BackupAssist, which would come to a total of around £3450.
I've got pricing for an Overland Storage solution for the main data, which would have 20x 300GB SAS drives, 10Gbit connectivity and would come to £17350.
As I've mentioned before, we prefer solutions which allow us to go to a manufacturer saying 'its broken, fix it' - especially for software. I don't want users to have to do anything to get files back - it isn't their job, its mine. When it comes to backup, the solution must have a support company at the end of a phone line, should I get hit by a big red bus and then that bus crash into our servers...
We're going for an HP DL180 G6 server with 2TB SATA HDs on it then using a mix of Veeam to do VMWare backups (nightly) and then once that's settled in DPM on top to give the continuous protection. Stack up with as many drives as you like and away you go
DPM is very good value for money on EES so well worth looking at, only caveat being if you're a VMWare shop you still need something to backup VMDKs