One of my production volumes has been running desperately low on disk space. This is happen far too often so I've decided to just go ahead and use some space on the SAN to put this large amount of data. The space I'm using is space that I am not a real huge fan of b/c it consists of Parallel ATA drive running at 5400rpm. Yes these are not even SATA drives. Anyway it's 2.5TB of unused space that I am copying the data to right now.
The data is coming from internal SCSI disks on the server that are 10Krpm and total 1.7TB of space. There is only 30GB available. So As you can see I gotta do what I gotta do. I started the data copy on Tuesday at 1pm EST. It's is now as you can see from the time of this post Friday 9am EST and it's copied 1TB so far. The server is connected to the SAN via HBA's set to 2GB Data rate. Pretty fast but the copy could have been far ahead if certain users didn't take ownership of a bunch of files tripping domain Administrator from the permissions. I get in on Thursday morning to find the script hanging for 30secs (the retry time)on every file in a specific folder. So I then have to manually change them and readd domain Admin back to the permissions. Who know how long the script was on these certain files. At that point 400GB's were copied. This morning it's 1 TB so I'd say that hold up cost me 200GB of data not being copied. Anyway I have 700GB's to go. So I'd say some time Saturday it will be done.
But wait! The script is set to check for changes at the source and run again. So it should update the destination. I'll have a test folder set at the very end of the source and modify the file inside accordingly to see if the destination get the update. I am using Robocopy version XP010 BTW.
Well couldn't I just restore from tape? Yeah but I need to run my backups this weekend and don't want to tie up my tape library for a few days restoring data. plus the restore will be from tapes that is a week old and I'd have to run some kind of sync software anyway. I therefore an potentially killing two birds with one stone doing it this way.
1 comment:
I was browsing through your blog and caught this entry. I rememebered that I've faced with just the same problem - last year I've spent a lot of time migrating data on new hardware. In the middle of this migration I've found great tool - so the last part of a migration procedure was pretty fast. My suggestion for you is to use secure copy for your next migration. This will save a ton of your time. Hope this information was helpful for you.
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