slow windows file copy

[Maciej99]

Hi

I have DL 380 G5 P400/256 BBWC and 4 SAS disk array 0+1. When i installed windows 2008 R2 on it copying 3 GB files took 2~3 seconds ( i understand thet wendows was copying this file for a longer time in backgroun) but when i instaled windows as guest in ESXi 4 copying took 50 seconds. How to anable windows to copy as fast as earlier ? Do i need to configure virtual SCSI controler and if yes then how ?

anyone has any idea?

[AntonVZhbankov]

Do you have battery installed on RAID?

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MCSA, MCTS, VCP, VMware vExpert '2009

http://blog.vadmin.ru

[Maciej99]

yes i have and it is full charged.

[AntonVZhbankov]

3GB / 50 seconds = 60 MB/sec. It's a good speed, you know.

3GB in 3 seconds = 1 GB / sec

---

MCSA, MCTS, VCP, VMware vExpert '2009

http://blog.vadmin.ru

[Maciej99]

Yes i know 60 MB/s it is a good speed. So i thing it is something with write caching in windows. It seems it is disabled and i do know why ? maybe it is somthing with virtual SCSI controler

[AntonVZhbankov]

1GB / sec is a fake speed, so I just can't see any problem with real 60 MB / sec.

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MCSA, MCTS, VCP, VMware vExpert '2009

http://blog.vadmin.ru

[Maciej99]

well it is problem for me because i would like to have fiew virtual machines and one of it wiil be a file server for old application which use dbf files. So this application will work faster if windows will cache read write operation.

[AntonVZhbankov]

Run some real load on a file server, not on local storage. On both physical and virtual file servers.

---

MCSA, MCTS, VCP, VMware vExpert '2009

http://blog.vadmin.ru