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Hardware question: RAID level

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Hardware question: RAID level - 18.Aug.2006 5:16:00 PM   
AdminGamer

 

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Joined: 18.Aug.2006
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Building a new Exchange server, it's a 1U box with four HD bays.

Would you go RAID-5 for parity, or RAID-10 for speed?

I'll be using 10k RPM WD's, which I've had very good luck with in other servers.
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RE: Hardware question: RAID level - 18.Aug.2006 9:13:35 PM   
Lancy

 

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Joined: 24.Feb.2006
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it depends

Raid 10 - gives u speed
Raid 5 - gives you more space for data with the disks available.

i would go for Raid 10.

(in reply to AdminGamer)
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RE: Hardware question: RAID level - 22.Aug.2006 3:16:56 PM   
sabel9579

 

Posts: 481
Joined: 4.Apr.2006
From: USA
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It all depends on number of users you have, mailbox sizes, etc...  4 disks is not a lot to host Exchange especially when you should separate the installation files, log files, and databases.  I'd recommend getting some type of DAS or NAS device so you have more disk space and can properly partition out the disks.  The last thing you want to worry about is running out of disk space only a few months into your deployment.

(in reply to Lancy)
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RE: Hardware question: RAID level - 30.Aug.2006 2:31:21 AM   
Hartman

 

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Joined: 22.May2006
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AdminGamer,

I will assume your exchange env is not that big since you are installing on a 1U box. I would suggest you build like this for some speed and some failure protection

RAID -5, parity and a hot spare

Get 4x136GB 15K (or10K) drives with the hot spare you will get only 260GB of disk space which is fine with exchange 2003 standard w/SP2 since you only get one mail store with a max of 75GB. There are so many ways you can go

You could also go with 2x136GB mirrored for the system and trans log, then 2x136GB for the databases mirrored also. This would allow you for force mount a sys volume if needed where on a raid system with the sys vol inside you cant.

To start with we need to know how many user and how much mail per day etc.. and what is more important to the business speed or tolerance.

Hartman

(in reply to sabel9579)
Post #: 4

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