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    • OksanaO

      StarWind Success Story: Město Přeštice Updates Its IT Environment

      Watching Ignoring Scheduled Pinned Locked Moved Starwind starwind vsan fault tolerance uptime shared storage sds sds infrastructure performance
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      1 Posts
      446 Views
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    • OksanaO

      StarWind Success Story: ECCOS Creates a Storage Pool That’s Golden with StarWind

      Watching Ignoring Scheduled Pinned Locked Moved Starwind starwind high availability shared storage
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    • OksanaO

      StarWind Success Story: One SDS to Revamp All AAA-9 Systems

      Watching Ignoring Scheduled Pinned Locked Moved Starwind shared storage ha high availability fault tolerance starwind hardware hypervisor
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      1 Posts
      349 Views
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    • OksanaO

      StarWind Success Story: Savronik Elektronik A.Ş. gets a fail-safe IT environment

      Watching Ignoring Scheduled Pinned Locked Moved Starwind san starwind shared storage redundancy hardware
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      1 Posts
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    • OksanaO

      StarWind Success Story: Město Přeštice Updates Its IT Environment

      Watching Ignoring Scheduled Pinned Locked Moved Starwind starwind vsan vsan shared storage fault tolerance starwind
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      1 Posts
      276 Views
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    • OksanaO

      StarWind Success Story: Enovade Reanimates Its SAN

      Watching Ignoring Scheduled Pinned Locked Moved Starwind starwind starwind virtual san shared storage
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      1 Posts
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    • OksanaO

      StarWind Success Story: CIPTI solves its backup problem

      Watching Ignoring Scheduled Pinned Locked Moved Starwind hyperv backup vsan shared storage
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      2 Posts
      331 Views
      B

      That resource library is really light on content. How did StarWind Virtual SAN solve their manual backup problem?

      "High performance and data high availability (HA) were not the only benefits for the company, meaning StarWind support t hat continues to solve the problems with ease."

      Is having to contact support for problems with the VSAN another benefit?

      It might as well say:
      Problem: Company needs to make a stew.
      Solution: Company bought a pot.

    • EddieJenningsE

      Infrastructure Needed for Hypervisor Cluster

      Watching Ignoring Scheduled Pinned Locked Moved IT Discussion cluster virtualization virtual storage appliance ipod home lab shared storage
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      scottalanmillerS

      @Vlinderbeest said in Infrastructure Needed for Hypervisor Cluster:

      @scottalanmiller said in Infrastructure Needed for Hypervisor Cluster:

      Clustering is done when the cost of clustering is low versus the risk of not clustering.

      I would change that slightly to Clustering is done when the cost of clustering is low versus the cost of not clustering. A risk is always a cost, but some costs are not risks. For example taking down a hypervisor for maintenance vs moving guests to another node and taking down a free node for maintenance.

      Sure, using risk cost vs investment cost as cost v cost is a perfect valid way to look at it. I use that all the time in the opposite way.

      You can say that risk is a cost. Or conversely, you can look at the clustering cost up front as essentially a "financial event" similar to an outage.

    • OksanaO

      Meet mind-blowing features and extended functionality of StarWind Virtual SAN!

      Watching Ignoring Scheduled Pinned Locked Moved Starwind starwind vsan vsan hybrid cloud software-defined storage solution virtual san starwind virtual san proactive support private cloud public cloud fault-tolerance shared storage
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      1 Posts
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    • OksanaO

      StarWind Virtual SAN upgrade procedure

      Watching Ignoring Scheduled Pinned Locked Moved Starwind virtual san vsan starwind vsan starwind virtual san virtual shared storage mirroring shared storage
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      1 Posts
      784 Views
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    • OksanaO

      Benchmarking StarWind Highly Available shared storage and local storage performance

      Watching Ignoring Scheduled Pinned Locked Moved Starwind starwind vsan virtual san shared storage local storage high availability ha starwind virtual san storage benchmarking storage performance storage
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      1 Posts
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    • OksanaO

      StarWind Virtual Storage Appliance now on Linux

      Watching Ignoring Scheduled Pinned Locked Moved Starwind starwind vsa virtual storage appliance linux esxi hyper-v starwind web console storage shared storage
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      1 Posts
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    • DustinB3403D

      XenServer NFS Storage Repo in the SMB

      Watching Ignoring Scheduled Pinned Locked Moved IT Discussion xenserver nfs shared storage smb
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      66 Posts
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      olivierO

      @Dashrender Okay let's retake a clean example: one VM in a SR, with one 4GB VDI:

      # lvscan inactive '/dev/VG_XenStorage-e27c48de-509f-3fec-d627-7f348062ab1a/MGT' [4.00 MiB] inherit inactive '/dev/VG_XenStorage-e27c48de-509f-3fec-d627-7f348062ab1a/VHD-770ceeac-e97e-4e05-b9c5-892b97b9d16e' [4.02 GiB] inherit

      After first snapshot:

      # lvscan inactive '/dev/VG_XenStorage-e27c48de-509f-3fec-d627-7f348062ab1a/MGT' [4.00 MiB] inherit inactive '/dev/VG_XenStorage-e27c48de-509f-3fec-d627-7f348062ab1a/VHD-38e2156f-da74-4edb-ac83-56fda54cfe55' [1.75 GiB] inherit inactive '/dev/VG_XenStorage-e27c48de-509f-3fec-d627-7f348062ab1a/VHD-770ceeac-e97e-4e05-b9c5-892b97b9d16e' [4.02 GiB] inherit inactive '/dev/VG_XenStorage-e27c48de-509f-3fec-d627-7f348062ab1a/VHD-f18856a5-039b-4d84-bf6c-a259d0f49a9e' [8.00 MiB] inherit

      After second snapshot:

      # lvscan inactive '/dev/VG_XenStorage-e27c48de-509f-3fec-d627-7f348062ab1a/MGT' [4.00 MiB] inherit inactive '/dev/VG_XenStorage-e27c48de-509f-3fec-d627-7f348062ab1a/VHD-38e2156f-da74-4edb-ac83-56fda54cfe55' [1.75 GiB] inherit inactive '/dev/VG_XenStorage-e27c48de-509f-3fec-d627-7f348062ab1a/VHD-f18856a5-039b-4d84-bf6c-a259d0f49a9e' [8.00 MiB] inherit inactive '/dev/VG_XenStorage-e27c48de-509f-3fec-d627-7f348062ab1a/VHD-770ceeac-e97e-4e05-b9c5-892b97b9d16e' [4.02 GiB] inherit inactive '/dev/VG_XenStorage-e27c48de-509f-3fec-d627-7f348062ab1a/VHD-68408f33-5a69-4b3b-afdd-a2cfabcad9ba' [8.00 MiB] inherit

      As you can see, we got a second 8 MiB logical volume, nothing more (base parent and active VDI doesn't change).

      Let's remove the latest snapshot:

      # lvscan inactive '/dev/VG_XenStorage-e27c48de-509f-3fec-d627-7f348062ab1a/MGT' [4.00 MiB] inherit inactive '/dev/VG_XenStorage-e27c48de-509f-3fec-d627-7f348062ab1a/VHD-38e2156f-da74-4edb-ac83-56fda54cfe55' [1.75 GiB] inherit inactive '/dev/VG_XenStorage-e27c48de-509f-3fec-d627-7f348062ab1a/VHD-f18856a5-039b-4d84-bf6c-a259d0f49a9e' [8.00 MiB] inherit inactive '/dev/VG_XenStorage-e27c48de-509f-3fec-d627-7f348062ab1a/VHD-770ceeac-e97e-4e05-b9c5-892b97b9d16e' [4.02 GiB] inherit

      It removes the previously created volume, as expected. Now, let's remove the initial snapshot. Durin few seconds, we'll have this:

      lvscan inactive '/dev/VG_XenStorage-e27c48de-509f-3fec-d627-7f348062ab1a/MGT' [4.00 MiB] inherit inactive '/dev/VG_XenStorage-e27c48de-509f-3fec-d627-7f348062ab1a/VHD-38e2156f-da74-4edb-ac83-56fda54cfe55' [1.75 GiB] inherit inactive '/dev/VG_XenStorage-e27c48de-509f-3fec-d627-7f348062ab1a/VHD-770ceeac-e97e-4e05-b9c5-892b97b9d16e' [8.00 MiB] inherit inactive '/dev/VG_XenStorage-e27c48de-509f-3fec-d627-7f348062ab1a/leaf_770ceeac-e97e-4e05-b9c5-892b97b9d16e_38e2156f-da74-4edb-ac83-56fda54cfe55' [4.00 MiB] inherit

      But it will be automatically "garbage collected" when the system will see than the chain doesn't have any snapshot in it (after few seconds in this case):

      # lvscan inactive '/dev/VG_XenStorage-e27c48de-509f-3fec-d627-7f348062ab1a/MGT' [4.00 MiB] inherit inactive '/dev/VG_XenStorage-e27c48de-509f-3fec-d627-7f348062ab1a/VHD-770ceeac-e97e-4e05-b9c5-892b97b9d16e' [4.02 GiB] inherit

      We are back to the initial situation.

    • scottalanmillerS

      Common Workloads That Should Never Run on Shared Storage

      Watching Ignoring Scheduled Pinned Locked Moved IT Discussion san nas shared storage storage architecture
      14
      0 Votes
      14 Posts
      3k Views
      C

      I have three servers, though two would be fine. I don't have what I understand as a "reliable failover system" or anything close to it, but if one server is down I am in a position to provide a degraded or limited service using the other server(s) which is generally enough to keep users happy and the business ticking over. It's in no way automated or anything like high availability, but it gives me options and in a crisis I like to have as many options as I can. The cost isn't anywhere near double, since you're not doubling up on disks or memory or CPU by spreading the load across two boxes.

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