amedexitt
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Best setup for RAID10 Exchange 2007 Drive Arrays
I was having a discussion with my DBA about how we are going to split the Exchange 2007 Databases.
To give you an idea, we are going from one 500GB store (a Testament to Exchange 2003 I gotta say!)
into 4-5 Storage Groups with 4 Databases a piece in all likelyhood. There are about 300-400 user mailboxes.
We have 12 300 GB 15K SAS drives in an MSA Array.. so the RAID 10 Storage total is 1.8 Terrabytes.
We are between three configs:
A)All 12 drives into one RAID10 array, giving us 1.8TB and splitting the space into individual partitions for 2-3 databases to each partition.
B)2 6 Drive RAID10 arrays giving us 900GB each, and 2-3 databases per partition, with 3 partitions of 300GB
C) 3 4 Drive RAID 10 arrays giving us 600GB each, and 2 partitions with 2-3 databases each.
Which config would give us the best performance? We are going to have heavy stores with light ones to try and balance the load.
What is the most databases you would recommend having transaction logs on a mirror array? Would 3-4 sets of Transaction Logs be OK for each one?
In any event, it's going to be much faster than the RAID 5 everything is sharing right now.
To give you an idea, we are going from one 500GB store (a Testament to Exchange 2003 I gotta say!)
into 4-5 Storage Groups with 4 Databases a piece in all likelyhood. There are about 300-400 user mailboxes.
We have 12 300 GB 15K SAS drives in an MSA Array.. so the RAID 10 Storage total is 1.8 Terrabytes.
We are between three configs:
A)All 12 drives into one RAID10 array, giving us 1.8TB and splitting the space into individual partitions for 2-3 databases to each partition.
B)2 6 Drive RAID10 arrays giving us 900GB each, and 2-3 databases per partition, with 3 partitions of 300GB
C) 3 4 Drive RAID 10 arrays giving us 600GB each, and 2 partitions with 2-3 databases each.
Which config would give us the best performance? We are going to have heavy stores with light ones to try and balance the load.
What is the most databases you would recommend having transaction logs on a mirror array? Would 3-4 sets of Transaction Logs be OK for each one?
In any event, it's going to be much faster than the RAID 5 everything is sharing right now.
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Public Folders are used, but the store for Public folders is rather small, only 1GB in size.
I'm sorry I didn't explain about the arrays for OS and Transaction logs being on a different controller than the RAID10 array.
Since I've never used a RAID10 array for Exchange DBs, I'm assuming the performance is much faster than a RAID5 correct?
I'm sorry I didn't explain about the arrays for OS and Transaction logs being on a different controller than the RAID10 array.
Since I've never used a RAID10 array for Exchange DBs, I'm assuming the performance is much faster than a RAID5 correct?
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Well the cost isn't the issue as we already have the 12 300GB drives in the office ;) Since we have the 8 drives for the main unit, minus 2 from OS, we have 6 available for Transaction Logs/etc so perhaps we will do a Raid 10 array for those 6 and give us 200GB for the Transaction Logs?
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Thank you very much Sembee, I appreciate the responses.
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The Transaction logs and the OS drive arrays off the DL380 will be off their own array controller (P400). There are 8 total drives 72GB 15K SAS each
The Database RAID 10 is on its own high end array controller(P800) with the 12 drives available.
Is there still a 5 Database Limitation in Exchange 2007 per Storage Group, or how many databases would you recommend per SG?