[Dovecot] OT: SAN vs Flash only SAN-less VM architecture for data storage
Hello all,
I am investigating options for leveraging our companies two locations, to provide fault tolerance/redundancy for our VM infrastructure.
I was looking at SAN storage options, but ran across an interesting article, and would like opinions. It sounds great, a real win-win as to cost *and* performance...
We have redundant/identical hosts at each location that can fulfill the requirements discussed...
http://www.storage-switzerland.com/Articles/Entries/2012/9/20_The_Benefits_o...
or
Stan, I'm especially interested in your take, considering your experience with high end SANs and VM storage environments...
Thanks,
--
Best regards,
Charles
On 7/20/2013 9:20 AM, Charles Marcus wrote:
It sounds great, a real win-win as to cost *and* performance...
Until you read the article carefully and note the network requirement:
"Data is synchronously written to another host with a PCIe SSD for data protection and high availability via a simple, private *10GbE* network."
-- Stan
On 21/07/2013 10:13, Stan Hoeppner wrote:
On 7/20/2013 9:20 AM, Charles Marcus wrote:
It sounds great, a real win-win as to cost *and* performance... Until you read the article carefully and note the network requirement:
"Data is synchronously written to another host with a PCIe SSD for data protection and high availability via a simple, private *10GbE* network."
I have no opinion on the subject, but for others who haven't read the article the 10gbe referred to is to keep the server in sync with a backup server somewhere presumed in the same room. As such 10gbe seems reasonable and inexpensive (newer supermicro can come with them built-in and standalone cards are reasonably inexpensive. The new Netgear 10gbe switch is even quite affordable)
As near as I can tell they advocate putting all the storage on the host machine and using network to sync off the machine (vs SAN where all the storage is off machine)
I don't really get where they are going with this solution though?
Ed W
How about all flash storage like the one from Skyera ?
http://www.skyera.com/products/skyhawk/tech-specs/
-- Best regards, Adrian Minta
participants (4)
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Adrian Minta
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Charles Marcus
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Ed W
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Stan Hoeppner