While I was greeting people at the SMBIT Professionals Sydney Group on Tuesday night one of the guys asked me what I do about some servers not rebooting with a USB Drive connected. Now this guy knows I’m a big fan of STORAGECRAFT™ Shadow Protect so the idea of backups to removable disk storage would have been something I have covered off before.
Now turns out I didn’t say much of anything about the reboot issue, one of the other guys hanging around fielded that. Turns out you can get a Bios Update that lets you move USB Drives down the boot order so issue solved.
Had I answered this question my answer might have been different. My answer goes back to our DR Strategy for SBS 2003 Servers before we started using Shadow Protect. Here is what we did and why…
- Get the biggest hard drive you can afford and insert it into the server as a backup target;
- Use the drive to hold the backups;
- UMMM that’s all.
Why? Because ASR could not see a USB Drive so could see the Backup Files. Why did we use ASR to disk based backup? We would restore to the same hardware so on HIR issues.
Before you scream about offsite data, let me say “I don’t care” the question was how do I stop the reboot hang when my server reboots with a USB drive connected and I just said backup to an internal drive.
Offsite storage for the SBS Server Backup files could be done many ways but I think this one works so let me describe what I do for folk who understand about our desire to provide something strong and reliable.
Offsite Replication over the Internet
Most SME’s in Australia have download capped Internet plans mostly with ADSL, so any kind of medium data change rates would cause traffic shaping in the very first week, lets just say Internet offsite replication is not really efficient or secure so forget I said anything.
Removable USB Drives – Server Connected
Many solutions use USB Drives either as the direct target for the backup or copy target using something like Robocopy of course the Robocopy solution copies the entire file even if there are only small changes in my solutions it just takes longer no really big deal but I would like to make it as efficient as possible.
If the USB Drive is attached to the Server we also have two possible points of mitigation, before we have a good solution:
- If the USB Boot Issue is not solved we have a maintenance and patching remotely issue;
- Users need to logon to the server to effectively change media
Removable USB Drives – Remote connected onsite
There are a number of solutions that could be implemented but the far simpler method in my opinion is attaching the USB Drive to a workstation, that way an unprivileged user has the rights to change the drive and few workstations have the same boot up issue as was described on servers.
I really need a full copy of the Backup Drive in the server and I want to have it complete as quickly as possible, to do this we use Delta Copy which is based on RSync allowing us copy the changed portions of the backup files for rapid replication.
Delta Copy also reports via email on success or failure so we can send the mail to our ticketing system allowing us to rerun backups / offsite copy the next day in accordance with our service levels.
Removable USB Drives – Rotation Best Practice
Of course the drives need to go off site and of course they need to travel so how do you make sure you minimise the risk of data loss due to damage, loss or environmental's? We ensure the client has a minimum of three devices and always have two at rest:
- in office attached to replication PC
- in remote location, often the business owners home office, one client stored it in their PO Box perhaps not the ideal location but they accepted the risk.
- one in transit each way
NOTE: This is Backup for DR Purposes – Archive is a different problem domain.