2010-11-19 02:15 PM
I understand that this is pending, but what is this going to look like? Is this going to be a SAS-FC bridge? If so, does this open any options for customers expanding an existing MetroCluster by adding SAS shelves attached via FC? Are there going to be any restrictions on MetroCluster config and Data ONTAP version? Will the support also be open for SSD? Sorry for the question dump!
I have a number of customers keen to get some new SAS shelves into the MetroCluster config, and a few customers stalling on purchasing a MetroCluster and committing to old DS14 technology.
2010-12-16 10:11 AM
Yes it is going to be a FC-->SAS bridge (1U pizza box) .. you would need two such bridges per stack of shelves .. it supports 3/6 GB SAS ports and 4/8 GB FC ports .. only Sierra shelves can be in the stack (DS4243/DS2246) .. sierra and DS14 cannot coexist within the same stack but can coexist within the same system ..
Once this bridge is released (plan is summer 2011), existing MC customers with DS14 shelves can expand storage .. however new aggregates will have to be created and new mirrors of those aggregates .. this is because syncmirror between FC-->SAS/SATA disks is disallowed .. there may be a possibility that it will be allowed in the future since FC and SAS disk behavior is similar
No SSD support planned for the initial release, but we are looking into it
2011-10-04 08:19 AM
2012-07-12 12:11 PM
now 18 months later are my question:
I found nothing abaut that in the 8.1.1RC1 release notes or in the field portal.
Does anybody have new informations about that ?
Thanks a lot.
2012-07-12 11:03 PM
The metrocluster compatibility matrix does not show SSD support yet.
I have not seen a public announcement yet, but under NDA you can get probably more information.
2012-07-17 05:01 AM
thanks for your answer.
I thought Metro Cluster Compatibility Guide is very less helpfull for my question, because it list only supported Diskdetails for "old" DS14MKx Shelfs.
Some words to ATTO Bridge/Firmare at Page 12. "Newer" Diskshelves DS4243 and DS2246 also listed at page 12, but without words about:
So still questions here.
At initial Release of Ontap 8.0.1 the SSD support cames up, but not for stretched/switched cluster.
"No SSD support planned for the initial release, but we are looking into it"
This is 2 years ago.
Thanks for additional clearness
2012-07-17 05:56 AM
On page 25 of TR-3548 you can read:
DS14 OK and no support for Flash Pools
DS4243 or DS2246, as of Ontap8.1.1 = no support for pure SSD in 8.1.1RC1
= Support for Flash Pools in Ontap 8.1.1
Hope this answers part of your questions. This TR was updated in June, so it is quite actual.
2013-03-04 02:52 PM
>Technical FAQ: Flash Pool Jay White, NetApp December 2012
Does Flash Pool work with MetroCluster?
Answer: Yes. Flash Pool is supported with MetroCluster. The following list describes important considerations and requirements that are specific to deploying Flash Pool with MetroCluster: