SMB Direct connectivity options with HP servers

22 Feb

Are there any 10GBE network cards from HP which you can use for SMB Direct?
Recently I was doing some research about the options of 10GBE/RDMA NICs for HP ProLiant rack servers (DL380/DL360) and I found some interesting new option for the relatively new Gen9 servers:

The 556FLR und 544FLR are FlexFabric adapters. These are special option of ProLiant rack server to extend the onboard connectivity with additional network ports together with the four builtin 1Gbit/s onboard NICs. The CN1200E is a regular PCI-E for installation in normal PCI-E slot.

So the answer is yes, there are now some NICs available from HP which you can use for SMB Direct (and with the NVGRE offload abilities even for efficient VM connectivity with NVGRE).

Why are the HP branded adapters interesting?
Sure you could use any RDMA capable NIC without the HP branding in a HP server but the benefit with HP branded adapter is that you get firmware and driver upgrades included with HP SUM like for any other components of the HP severs. So you can update all drivers and firmwares with one Tool/Setup at once.
Furthermore you have not to debate with HP that its not the network adapter which is responsible for the issue if you have a hardware support case for something else at HP. You know what I mean… 😉

But no iWARP with HP?
It looks like HP has no love for iWARP. There are no HP branded NIC which supports iWARP or at least I couldn’t found it. This meaning if you want to use HP Adapters for SMB Direct you have to go the RoCE path which need some more investments in the networking part (DCB/PFC). MVP Didier Van Hoye has some great blog posts about this topic.

Update April 1, 2015:
As stated in the HP Blog there are now two new Mellanox ConnectX-3 Pro based adapters for Gen9 servers:

Thanks to the Mellanox chip the new adapters support both RDMA (RoCE) and NVGRE offloading like the older 544FLR but at a much lower price.
Although the 544FLR adapter supports also 40GBE and infiniBand. The new 546 adapters support “only” 10GBE.

How to delete a specific Recovery Point in DPM

10 Feb

There is no possibility to delete a recovery point (backup) in DPM via GUI. But good old friend PowerShell helps. 🙂

Here is an example. We want to delete the Recovery Point from the evening of February 8 from the Backup of the file server FSSRV001 in the Protection Group “File Backup”. DPM Server name is “DPMSRV001”

  1. First get the Protection Group to which the recovery point belongs
  2. Then you need the Data Source from where the data in the recovery point comes from.
  3. And finally you need to select the Recovery Point which you want to delete. You can identify the Recovery Point by Date and Time.
  4. Now we have all of the needed information an we can delete the Recovery Point.