Re: Enable Write Disk Caching not saving (Server 2003)
- From: "George Valkov" <a@xxxxx>
- Date: Mon, 30 Apr 2007 19:37:16 +0200
You may try to install a UPS and if the driver knows that the power is
backed up, it may eventually enable the write cache, but I have no
experience with UPS or hardware disk arrays, so I am only making a guess
here. Good Luck!
George Valkov
<daniel.dryhurst ?@gmail?com> wrote:
Hi
I have recently built and configured a new server (HP DL360 G5
series), with two 70GB hard disks configured as the default Raid 1 in
the hardware.
I have not promoted it to a domain controller and the only role set is
that of a file server. One of the legacy applications that it is for
requires 'Write Disk Caching' enabling.
So I go into the device manager disk properties and click on the
policies tab to enable it. I get a message underneath the check box
along the lines of:
"This device does not allow its write cache setting to be modified"
So, I check the box anyway and then when I go back in the setting
hasn't saved at all. I have checked the following registry setting:
HKLM/System/CurrentControlSet/Enum/SCSI/VotreHardDisk/SerialNum/
DeviceParameters/Disk/UserWriteCacheSetting which is set to a value of
'1'.
I have checked the event log and got the following information:
Event Type: Warning
Event Source: Disk
Event Category: None
Event ID: 34
Date: 30/04/2007
Time: 09:18:19
User: N/A
Computer: xxxxxxxx
Description:
The driver disabled the write cache on device \Device\Harddisk0\DR0.
For more information, see Help and Support Center at
http://go.microsoft.com/fwlink/events.asp.
Data:
0000: 0f 00 04 00 01 00 62 00 ......b.
0008: 00 00 00 00 22 00 04 80 ...."..?
0010: 01 00 00 00 10 00 00 c0 .......À
0018: 00 00 00 00 00 00 00 00 ........
0020: 00 00 00 00 00 00 00 00 ........
0028: 00 00 00 00 ....
I have been into the BIOS and cannot see any settings related to DMA/
Write caching etc. I have also tried the HP Array Configuration
Utility which only has options for acceleration whch are on default
settings. I'm really at a loss here, as far as I know these settings
should be allowed.
I know that it is DEFINITELY not switched on though registry indicates
differently because on the old NT4 server a file scan takes 25 seconds
and on the new hardware it takes upwards of 5 minutes.
Can anyone please help me?
.
- References:
- Enable Write Disk Caching not saving (Server 2003)
- From: daniel . dryhurst
- Enable Write Disk Caching not saving (Server 2003)
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