ESXi 4 - questions RAID - ASUS RS700-E6/RS4

I have dabbled with virtualization for a few years now, but he must admit from the outset that I am new to the world of ESXi.

Our company is you want to replace the 4 servers of aging with a new beefier configuration running Windows Server 2008 Enterprise x 64.  After doing some research and making reference to the list of ESXi 4 HCL, decide us pick the server next stop of the HCL:

ASUS RS700-E6/RS4

2 x Intel Xeon E5520 Nehalem 2.26 GHz LGA 1366

8 x CORSAIR 2 GB 240-pin DDR3 SDRAM DDR3 1333 ECC

3 x Western Digital RE3 WD1002FBYS 1 TB 7200 tr / MIN SATA 3.0 GB/s

The server hardware is not bad.  I know that's not the greatest, but it's more than enough to meet our needs.

So here's the question: I can't get the ESXi software to detect the matrix RAID which has been implemented.  I tried to use RAID 5/10 configurations and for the life of me, cannot get the software to detect the hard disks as a single disk.  When Setup runs, it asks that one of the physical install disks to, rather than install them in the table.  This is quite annoying, because we need this configuration for redundancy (in the case of a tragic failure.  The server uses the following controller technology:

SATA controller:

Intel® ICH10R:

6 300 MB/s SATA2 ports

Intel Matrix Storage Manager (for Windows only)

(Support RAID 0, 1, 10 and 5 software)

LSI MegaRAID® (for Linux/Windows)

(Software support RAID 0, 1, 10)

SAS controller:

Optional:

Card ASUS PIKE 1064E 4-port SAS RAID

Card Asus PIKE 1078 8 ports SAS HW RAID

Currently, I am using Insider Software RAID (on board).  Is it necessary to use hardware RAID for correct detection?

Does anyone have experience with this?

cipacs wrote:

{quote

Not that I wish not to take your word on it, but is there a document which confirms that the hardware raid levels is necessary?

Not that I know, but everyone down here can confirm that it has NO software RAID supported in ESX, it has never been argued.

He's already happy that you can even use your built-in chipset ICH10 controller.

Hardware RAID is expensive for a reason, there is an additional processor, which unloads the CPU. Software RAID uses your hosts, a CPU CPU already, you normally want the additional tax that you need for your virtual machines.

Regarding your card RAID Pike, it doesn't seem like the HCL, so I would say that this is not supported.

Or wait, it seems that the RAID Pike map is a LSI controller renamed with a chipset 1064/1078 who expected to work. However, in your case I make sure and get confirmation from ASUS that it works with vSphere before ordering.

While you're at it, get a sustained unit (BBU) battery with the controller as it makes a huge difference in performance that you can then activate the write back cache.

--

Wil

_____________________________________________________

VI-box tools & scripts wiki at http://www.vi-toolkit.com

Edit: added note on the LSI

Tags: VMware

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