| Author |
Message |
Fabrussio
Guest
|
 Posted:
Mon Jan 24, 2005 6:03 pm Post subject:
Exchange 2003 Partitions |
|
|
I have a 5 disk RAID5 config. With 210GB available (after redundancy). I have
read a lot about seperate drives for log files but I thought RAID5 spanned
all drives anyway? We are not a high demand environment.
With 1000 mailboxes needing about 50MB each my idea for partitioning was this:
C:\ - Win2003 OS - 30GB
D:\ - Exchange2003 - 120GB
E:\ - Exchange2003 Transaction Logs - 30GB
F:\ - Misc - 30GB
Is this OK?
How big will these transaction logs get? I am backing up weekly.
Thanks 4 any advice
|
|
| Back to top |
|
 |
Mark Arnold [MVP]
Guest
|
| Posted:
Mon Jan 24, 2005 8:15 pm Post subject:
Re: Exchange 2003 Partitions |
|
|
On Mon, 24 Jan 2005 04:03:01 -0800, Fabrussio
<Fabrussio@discussions.microsoft.com> wrote:
| Quote: | I have a 5 disk RAID5 config. With 210GB available (after redundancy). I have
read a lot about seperate drives for log files but I thought RAID5 spanned
all drives anyway? We are not a high demand environment.
With 1000 mailboxes needing about 50MB each my idea for partitioning was this:
C:\ - Win2003 OS - 30GB
D:\ - Exchange2003 - 120GB
E:\ - Exchange2003 Transaction Logs - 30GB
F:\ - Misc - 30GB
Is this OK?
How big will these transaction logs get? I am backing up weekly.
Thanks 4 any advice
|
You're talking about partitions here rather than RAID levels.
The suggestion for separate RAID levels for the OS, Exchange, Exchange
Logs and Exchange Databases (1, 1, 1, & 1 or 5, (ignoring all
permutations of RAID1 derivatives such as 0+1 & 10) are so that your
server can keep running with multiple disk loss. In addition the I/O
of one function (logs) is different from that of another (databases)
so a single RAID5 isn't optimal.
If you have a single RAID5 with a hot spare AND don't expect much of a
performance problem with the I/O then you're fine as you are.
Remember that in your configuration you can only afford to lose one
disk before you're into restore teritory. with a multiple RAID layout
you can lose several disks without needing to break out the tapes.
Backup daily. |
|
| Back to top |
|
|
Fabrussio
Guest
|
| Posted:
Tue Jan 25, 2005 4:15 am Post subject:
Re: Exchange 2003 Partitions |
|
|
Thanks Mark, so if I really was going to have RAID 1 for all 4 of those bits
(OS, Exchange etc) I would lose half my storage capacity...right?
I am a bit unclear as to what options there are available to me with these 5
x 72GB drives, do I need to be aware of physical disks or can I just allocate
parts of the total 360GB unpartitioned space as RAID 1 or 5. Forexample if I
want to RAID 1 the OS on 20GB (so using a total 40GB) can I use the remaining
32GB of that physical disk in a RAID 5 with the rest of the space?
is that a stupid Q?
"Mark Arnold [MVP]" wrote:
| Quote: | On Mon, 24 Jan 2005 04:03:01 -0800, Fabrussio
Fabrussio@discussions.microsoft.com> wrote:
I have a 5 disk RAID5 config. With 210GB available (after redundancy). I have
read a lot about seperate drives for log files but I thought RAID5 spanned
all drives anyway? We are not a high demand environment.
With 1000 mailboxes needing about 50MB each my idea for partitioning was this:
C:\ - Win2003 OS - 30GB
D:\ - Exchange2003 - 120GB
E:\ - Exchange2003 Transaction Logs - 30GB
F:\ - Misc - 30GB
Is this OK?
How big will these transaction logs get? I am backing up weekly.
Thanks 4 any advice
You're talking about partitions here rather than RAID levels.
The suggestion for separate RAID levels for the OS, Exchange, Exchange
Logs and Exchange Databases (1, 1, 1, & 1 or 5, (ignoring all
permutations of RAID1 derivatives such as 0+1 & 10) are so that your
server can keep running with multiple disk loss. In addition the I/O
of one function (logs) is different from that of another (databases)
so a single RAID5 isn't optimal.
If you have a single RAID5 with a hot spare AND don't expect much of a
performance problem with the I/O then you're fine as you are.
Remember that in your configuration you can only afford to lose one
disk before you're into restore teritory. with a multiple RAID layout
you can lose several disks without needing to break out the tapes.
Backup daily.
|
|
|
| Back to top |
|
|
|
|
|
|
FAQ
Memberlist
Register
Profile
Log in to check your private messages
Log in