What are the sysem hardware specs for the multi tenent pbx software?
Does it support Raid 0,1,5, 10 or HPs really fun proprietary SMART Raid ?
System requirements will depend on your requirements for the number of concurrent calls, call recordings, possible custom dialing scripts and third party applications that you might have. Do you have approximate requirements to what server should be able to handle?
Thirdlane distro is based on CentOS 6 so it will work on HP servers with HP Smart Array. However according to http://h17007.www1.hpe.com/us/en/enterprise/servers/supportmatrix/exceptions/cent_exceptions.aspx#.Wa0KKemEbIV some newer servers will require driver update.