Best way to access the 2 TB volumes +.

Please tell me if you think this is the best approach.  I'm new on ESXi and I'm still learning how to take advantage of it...

I have a server with 8 x 2 TB Seagate drives, a material in Areca 1230 raid controller and an additional Seagate hard disk of 500GB.

I want to get the highest throughput and the best performance since records of 8 x 2 TB and the Areca raid controller, support RAID 5 and the ability to use disk space in ESXi.

The system is currently configured as follows:

-ESXi is installed on the hard disk of 500 GB; I would like to use a USB flash drive,

but the motherboard does not support boot from a USB flash drive.

-8 x 2 TB drives are assigned to a RAID, and within the entire raid, raid volumes 5-8 x 2 TB have been created.

-Inside the ESXi, the first raid volume created a store of data and then I added the remaining volumes as extensions.

-Gigabit ethernet (full duplex) - no jumbo frames

-6 GB of RAM of the system with a processor core 2 duo

Amount of space between the new data store has been assigned to one of the machines virtual and all tested well.  For example, I was able to copy a 2.4 GB file from one directory to another in 24 seconds.  This looks pretty good to me, since the specifications of disks show that they can maintain 95 MB/s of throughput.  I am trying to find how to install / use IOMeter to get more accurate test results.

I created a SAMBA share and ran two tests.  Copy a file to the server from the network suffered between 50 Mbps and 54 Mbps.   Reading a file from the server also maintained between 50 Mbps and 54 Mbps.  This seems odd for two reasons.

First, I tested the system with Ubuntu and SAMBA (no ESXi) and the files copied to the server at 66 MB/s.  Would imply it that ESXi General encurs that slows down the performance of the network by about 12 MB/s to 16 MB/s.  This seems a lot and gives me the impression that I did something wrong.

Second, with ESXi installed, network throughput was between 50 Mbps and 54 Mbps all the time.  There was no initial explosion of high performance and throughput does not slow down over time.  This seems odd.  Wouldn't buffers / cache come into play?  For example, the Areca raid controller has 1gig of ram.  All least, shouldn't expect higher rates until the cache is full?  I've seen this problem on other NAS drives and I'm a little surprised that I'm not work in here.

Thanks in advance for any thoughts, comments, or recommendations you have on any aspect of this - I should get this or comment on the raid controller, how it was configured, how better understand space in ESXi, or even advice on what kind of network throughput.

For once I disagree with (sorry) DSTAVERT - given that all eight extensions are hosted on the same underlying RAID volume, there is no additional risk [/ b] in this configuration compared to a single set of 8 TB RAID-5 can be used without ESX.  If something goes wrong in this scenario, all eight extensions would be affected simultaneously.

With respect to performance, this seems reasonable to me.  Keep in mind that for virtualization are generally is much more on random IOPS throughput / s sequential read (or write) block.  Eight batteries will help with that but disks SATA quickly bogged down unfortunately.

You have to have one-Core 2 Duo, I would suggest running with 1 vCPU only guests.

Please give points for any helpful answer.

Tags: VMware

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