Slow BackUP to Server
Posted on 2010-01-13
Slow data transfer to serverQuestion: Hello,
Backup activity across the network involving the server appears VERY slow, or is it???
HP DL380 G4 with 6xU320 300GB 10K drives, 6GB RAM Win Server 2008 STD, Gigabit LAN
The computer currently backing up is:
Pentium 3.4 Extreme, 9xU320 drives 148 to 300GB 10K & 15K, ASUS P4c800, 4GB RAM WinXPpro, Gigabit LAN
The Router is:
D-Link DIR 655 Extreme N Gigbit Router. It auto sets the LAN ports 10/100/1000 gbps
Both computers use Category 6 wired LAN connections to the router.
Backup generally seems very slow. The current backup is used for an example.
Currently Acronis True Image is making an image of the OS partition on the PC (the tower not the Server) This partition is about 140GB with a bit over 80GB used. Normal compression is used in Acronis which is normally about 2:1. There should therefor not be much more than 40GB to compress and move.
The disk on the server to take the image is part of a RAID array. The file is sent to its own folder.
Local Area Network Status on each machine notes the 1GBPS connection. On the sending machine when timed that shows about 250MB per minute sending. The receiving Server shows a bit over 200MB per minute. Sounds very slow to me. There would be error checking I imagine but 200 x 5 moves 1GB in 5 minutes therefore 40 GB should move in about 3.3 hours. It is set to check the result, I am sure it does not but even if that doubled that time it is a lot worse than that.
Acronis says the process will take 12 hours.
It took nearly that time to resurrect one 300GB drive in RAID and it took probably half as long again to backup 200GB using Acronis.
Is there any thing I can do to speed this up? Is it possible that this is anything like normal?
Just now that I get to the end it slowly dawns on me that I have been talking GigaBIT speed and GigaBYTE data. That should make the task 8 times as large I suppose. If it can theoretically move 1Gbps shouldn't it be able to move nearly 125 MB/second not 250mb per minute?