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SAN Configuration --

Posted on 2014-02-11
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Last Modified: 2014-02-27
Ok here is what I have going...

I am currently upgrading my SAN from a Compellent SAN running raid 10 to a Fusion-IO SAN with 720GB of front side flash.  Backside infrastructure is VMWare 5.1 running on two DL360's with 100gb ram each.

Network infrastructure is all Cisco. Both the Compellent and Fusion are connected to two Cisco 3650G with half of their connections going to each one.  

The data network is in 172.16.110.xxx  

show VLAN
 has all of the ports in  VLAN 110.

show run -  
interface Vlan110
 no ip address


My warranty on the Compellent is expiring shortly.  I have installed the new SAN and run performance tests with Iometer.  The Iometer tests show the old Compellent disks giving better Iops.  22k vs 17k....   I find it hard to believe that my 5 year old Compellent does better than my new SAN with front loading flash.
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Question by:Sean Meyer
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3 Comments
 
LVL 120

Assisted Solution

by:Andrew Hancock (VMware vExpert / EE MVE^2)
Andrew Hancock (VMware vExpert / EE MVE^2) earned 500 total points
ID: 39851585
What is the question?,

Why is my new SAN slower than my old one?

and it's a shame you have just upgraded to a new SAN, because after our extensive tests, where vendors, put SSD/Flash in the SANs, there is still LANTENCY between the hosts and the SSD/Flash cache in the SAN.

So, we have been testing and now using Pernixdata solution, where the SSD/Flash is close to the CPU, e.g. in the Host, read and writes are written to the cache in the Hypervisor, and trickled back to ANY SAN!!!!

http://www.pernixdata.com/

VMs, can be speciifcly allocated to take advantage of FLASH!

The Pernixdata solution, is the BEST solution for VMware, currently on the market, which can boost Lantency and IOPS for any SAN.
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LVL 9

Author Comment

by:Sean Meyer
ID: 39882712
Any answers besides I should have bought something else?

What are recommended tests / configurations I could try to improve performance on the new SAN with its PCIE flash?
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LVL 120

Accepted Solution

by:
Andrew Hancock (VMware vExpert / EE MVE^2) earned 500 total points
ID: 39882718
Jumbo Frames, more network interfaces, more paths to SAN
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