Re: Disk Configuration for AD domain controllers

Hello Caryn,
YOu can configure your hardware into 2 RAID 1 arrays. Yes, it is a good idea not to have AD database in same drive as OS.. In my environment, I have OS in C and AD database (sysvol) in D drive.

--
Isaac Oben [MCTIP:EA, MCSE]
"Caryn Condon" <CarynCondon@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message news:B62FBC22-544C-4CB8-A779-91BD134E6FC1@xxxxxxxxxxxxxxxx
We have two Dell PE1950's with mirrored 73gb drives and 2gb of memory. We
need guidance for configuring the disk drives. These two servers will be our
AD domain controllers and will also have integrated DNS.

My questions are as follows:
1. I read that it is recommended to store the AD database and logs on a
separate disk from the OS. Since I don't have the luxury of two separate
disks, is it ok to create on large partition for the OS, db and logs or
should I create two separate partitions?

2. I have already used these servers (using one large partition for the os,
db and logs) for testing my upgrade path from NT4 to Win2k3 AD. During the
tests I noticed the following error on both servers:
"Event ID 1539

The local domain controller could not disable the software-based disk write
cache on the following hard disk.

Hard Disk:

C

Data might be lost during system failures."

Doing google searches I believe this error is because the db and log files
are on the same partition as the OS. I also came across notes on disabling
write cache but it is still unclear to me what my best option is. Should I
leave the write cache enabled or should I disable it on the RAID controller?
I looked at the Dell Open Manage logs for the hardware and the RAID
controllery battery is fine and there are no raid or hard drive errors.

Thanks in advance for any assistance.

.

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