RE: RAID in Exchange

  • From: "Mark Arnold" <mark@xxxxxxxx>
  • To: "[ExchangeList]" <exchangelist@xxxxxxxxxxxxx>
  • Date: Fri, 15 Nov 2002 11:29:01 -0000

You can't really RAID an IDE set.
You need a SCSI subsystem which is where the "every hard disk uses its
own controller" sentence comes in.
The optimal for Exchange is hardware raid with the following
2 drives in RAID1 for the operating system.
2 drives in RAID1 for the Exchange logs.
3 or more drives in RAID5 for the exchange stores.
The RAID1 number of drives can be reduced from two individual RAID1 sets
to a pair of drives in RAID1 with two partitions.
If you have to use IDE then you might do it this way:
Controller 0 Primary - Operating System
Controller 0 Slave - Exchange Install and Logs
Controller 1 Primary - Mirrored stores
Controller 1 Slave - Mirrored stores
There are several options, all of which give varying degrees of
resilience/performance mixes.
-----Original Message-----
From: Boed Yun [mailto:boedy@xxxxxxxxxxxxxx] 
Sent: 15 November 2002 10:32
To: [ExchangeList]
Subject: [exchangelist] RAID in Exchange
I am a new in IT World and have a stupid question , I've ever post this
message but never get an answer. I want to build Exchange Server. and I
plan to use several HD (I use all IDE both primary and secondary) , they
say I could improve performance by using RAID0 or RAID5 because every
harddisk use its own controller. Can I use that ? or anyone have an idea
and sometimes I confuse about harddisk contoller. a friend told me that
it's on the harddisk ( PCB attached to Harddisk) but someone else told
me that it's on the motherboard or separate card.
I don't know which one is correct .

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