Posts
What AI Workloads Need from Kubernetes Storage
3 weeks ago
Tuesday, 25 May 2010
New Paper: Virtualisation – Did You Overlook Storage?
“With the spotlight on server, desktop and application virtualization, it is easy to forget that your approach to data storage must also change.” Download: Virtualization – Did You Overlook Storage?
Tuesday, 18 May 2010
Solution resilience: What is DataCore High Availability with Synchronous Mirroring?
Check out the posts on SANmelody Tunes:
http://sanmelody.blogspot.com/2010/04/high-availability-where-is-your-weakest.html
So, what is DataCore High Availability with Synchronous Mirroring?
In simple terms, DataCore HA with Synchronous Mirroring protects and ensures data from ANY single component failure in the storage solution, including environmental, back-end disks, DataCore storage controllers and IO channels.
Not only that, but additional levels of redundancy can be achieved at each layer of the storage network....read the full post and examine a number of failure scenarios at:
http://sanmelody.blogspot.com/2010/04/datacore-solution-resilience.html
Failure resilience scenario's
A Healthy Solution:
Two node configuration, redundant mirror channels, redundant disk channels, redundant app channels.
Can be geographically separated - Whether racks, rooms, building, states.
High Availability - Where is your weakest link
It surprises me how often I see companies spending money (large amounts) on technology to make their core business applications resilient to infrastructure failure, but fail to build redundancy into all critical infrastructure components. See complete post and diagrams at:http://sanmelody.blogspot.com/2010/04/high-availability-where-is-your-weakest.html
So, what is DataCore High Availability with Synchronous Mirroring?
In simple terms, DataCore HA with Synchronous Mirroring protects and ensures data from ANY single component failure in the storage solution, including environmental, back-end disks, DataCore storage controllers and IO channels.
Not only that, but additional levels of redundancy can be achieved at each layer of the storage network....read the full post and examine a number of failure scenarios at:
http://sanmelody.blogspot.com/2010/04/datacore-solution-resilience.html
Failure resilience scenario's
A Healthy Solution:
Two node configuration, redundant mirror channels, redundant disk channels, redundant app channels.
Can be geographically separated - Whether racks, rooms, building, states.
New White Paper: Metro Clusters and Virtualization; Uninterrupted Access to Cluster Shared Volumes (CSVs) Synchronously Mirrored Across Metropolitan Hot Sites
Click to download:
WHITE PAPER: Uninterrupted Access to Cluster Shared Volumes (CSVs) Synchronously Mirrored Across Metropolitan Hot Sites
For an in-depth Case Study on Continuum Health Partners and Metro Clusters, please visit: http://www.datacore.com/continuum
WHITE PAPER: Uninterrupted Access to Cluster Shared Volumes (CSVs) Synchronously Mirrored Across Metropolitan Hot Sites
For an in-depth Case Study on Continuum Health Partners and Metro Clusters, please visit: http://www.datacore.com/continuum
Thursday, 13 May 2010
Citrix Synergy 2010: DataCore Virtualization Software Takes Citrix Projects to the 3rd Dimension; Going Beyond Servers and Desktops to Virtualize Storage
DataCore Virtualization Software Takes Citrix Projects to the 3rd Dimension; Going Beyond Servers and Desktops to Virtualize Storage http://www.dabcc.com/article.aspx?id=14561
Tuesday, 11 May 2010
DataCore Virtualization Ensures Uptime and Makes Metro Clusters Possible for Continuum Health Partners – One of the Largest Health Care Providers in the U.S.
For a more in-depth Case Study on Continuum Health Partners and Metro Clusters, please visit: http://www.datacore.com/continuum
DataCore Virtualization Ensures Uptime and Makes Metro Clusters Possible for Continuum Health Partners – One of the Largest Health Care Providers in the U.S.
http://vmblog.com/archive/2010/04/14/datacore-virtualization-ensures-uptime-and-makes-metro-clusters-possible-for-continuum-health-partners-one-of-the-largest-health-care-providers-in-the-u-s.aspx
DataCore virtualization software has been deployed in two metro clusters at Continuum Health Partners, Inc. (“Continuum”), whereby it affords multi-site data protection and failover. Continuum, like many health networks, was faced with the challenge of making their diverse storage infrastructure available around the clock, across multiple locations. “Our goal here was to deploy a system that would allow us to achieve high availability and business continuity for all of our clinical systems,” states Jill Wojcik, IT Director, Continuum Health Partners. “With DataCore in place and with hardware in two different locations, this has allowed us to make our mission-critical, clinical imaging – along with other systems – highly available.”
Overcoming Downtime and Unavailability of Data
Beth Israel Medical Center and Roosevelt Hospital, two hospitals in Continuum’s network, were faced with the challenge of downtime and data availability. Thanks to metro-wide storage virtualization from DataCore Software, Continuum now has many of their imaging systems and three of their principal IT facilities running on metro-clusters.
The metro-clustered IT infrastructure at the two Continuum hospitals ensures business continuity, with DataCore storage virtualization software at the center of it. DataCore synchronously mirrors the PACS (Picture Archiving and Communications Systems) images from Beth Israel Medical Center and Roosevelt Hospital in New York to Continuum’s data center in Secaucus, New Jersey. “With specific reference to the PACS images, before this metro-clustering initiative these systems had their own support people at the various hospitals and were pretty much autonomous systems,” explained Wojcik. “We have brought this in and have centralized the systems now in our central data center – using DataCore software running on top of the various hardware solutions.”
The overarching benefit of this implementation, however, has been unprecedented high availability. The key to this is that the data resides on geographically separated 100% mirrored systems – where one set of disks resides at the data center and one set resides in a “remote” hospital. Continuum has effectively eliminated the need to do traditional disaster recovery should a calamity happen. Whereas many IT organizations normally go through a painful process of assembling resources to recover data following a site-wide outage, the metro clusters at Continuum Health Partners allow them to take over operations from their hot site uninterrupted.
Additionally, a very tangible benefit of this metro cluster environment has to do with system maintenance. System maintenance can now be done without any interruption to the user community. Wojcik commented, “Since we have implemented this, we have not experienced any downtime – even for system maintenance.”
Hospitals use DataCore storage virtualization http://searchstorage.techtarget.com/news/article/0,289142,sid5_gci1510119,00.html
DataCore Virtualization Ensures Uptime and Makes Metro Clusters Possible for Continuum Health Partners – One of the Largest Health Care Providers in the U.S.
http://vmblog.com/archive/2010/04/14/datacore-virtualization-ensures-uptime-and-makes-metro-clusters-possible-for-continuum-health-partners-one-of-the-largest-health-care-providers-in-the-u-s.aspx
DataCore virtualization software has been deployed in two metro clusters at Continuum Health Partners, Inc. (“Continuum”), whereby it affords multi-site data protection and failover. Continuum, like many health networks, was faced with the challenge of making their diverse storage infrastructure available around the clock, across multiple locations. “Our goal here was to deploy a system that would allow us to achieve high availability and business continuity for all of our clinical systems,” states Jill Wojcik, IT Director, Continuum Health Partners. “With DataCore in place and with hardware in two different locations, this has allowed us to make our mission-critical, clinical imaging – along with other systems – highly available.”
Overcoming Downtime and Unavailability of Data
Beth Israel Medical Center and Roosevelt Hospital, two hospitals in Continuum’s network, were faced with the challenge of downtime and data availability. Thanks to metro-wide storage virtualization from DataCore Software, Continuum now has many of their imaging systems and three of their principal IT facilities running on metro-clusters.
The metro-clustered IT infrastructure at the two Continuum hospitals ensures business continuity, with DataCore storage virtualization software at the center of it. DataCore synchronously mirrors the PACS (Picture Archiving and Communications Systems) images from Beth Israel Medical Center and Roosevelt Hospital in New York to Continuum’s data center in Secaucus, New Jersey. “With specific reference to the PACS images, before this metro-clustering initiative these systems had their own support people at the various hospitals and were pretty much autonomous systems,” explained Wojcik. “We have brought this in and have centralized the systems now in our central data center – using DataCore software running on top of the various hardware solutions.”
The overarching benefit of this implementation, however, has been unprecedented high availability. The key to this is that the data resides on geographically separated 100% mirrored systems – where one set of disks resides at the data center and one set resides in a “remote” hospital. Continuum has effectively eliminated the need to do traditional disaster recovery should a calamity happen. Whereas many IT organizations normally go through a painful process of assembling resources to recover data following a site-wide outage, the metro clusters at Continuum Health Partners allow them to take over operations from their hot site uninterrupted.
Additionally, a very tangible benefit of this metro cluster environment has to do with system maintenance. System maintenance can now be done without any interruption to the user community. Wojcik commented, “Since we have implemented this, we have not experienced any downtime – even for system maintenance.”
Hospitals use DataCore storage virtualization http://searchstorage.techtarget.com/news/article/0,289142,sid5_gci1510119,00.html
Monday, 10 May 2010
Drive Down Server Virtualization’s Storage Costs
http://www.processor.com/editorial/article.asp?article=articles/P3207/34p07/34p07.asp&guid=
As a potential first step to meeting shared SAN requirements across virtual servers, Augie Gonzalez, director of product marketing at DataCore Software ( http://www.datacore.com/ ), suggests using portable storage virtualization software to make the disks inside the existing physical servers shareable. “The storage virtualization stack will run inside its own virtual machine (VM) or right on top of the hypervisor. From there, it first virtualizes formerly dedicated drives into shared iSCSI resources accessible from multiple VMs over a conventional LAN.”
...At the point where application workloads consume more than 75% of the physical server resources and the number of servers grows, DataCore’s Gonzalez advises moving the storage virtualization software into a pair of small dedicated servers that can handle the expanded capacity and I/O demands of the bigger environment. This, too, is straightforward, as the software licenses are fully portable from virtual to physical machines. Achieve further cost containment by relocating the original internal drives behind the storage virtualization nodes before any more storage is added.
...Many of the storage applications are dual mode, meaning they can reside in either a virtual machine or a dedicated physical host. DataCore’s Gonzalez believes this gives SMEs the best of both worlds. SMEs can start small, leveraging internal disks, and then as the production environment ramps up, they can move the storage to a dedicated system. Throughout that process, shared storage is available, but cost and complexity are kept to a minimum.
Key Points:
• Shared storage is critical for maximizing the benefits of server virtualization, and now it is also affordable for the small to midsized data center.
• Leveraging the server virtualization project itself either through the use of virtual machines or by repurposing legacy servers is a key element in driving out costs.
• Simplicity is as critical as reducing hard costs; SME personnel typically wear multiple hats, and integrating storage management into the virtual server management console reduces complexity significantly.
As a potential first step to meeting shared SAN requirements across virtual servers, Augie Gonzalez, director of product marketing at DataCore Software ( http://www.datacore.com/ ), suggests using portable storage virtualization software to make the disks inside the existing physical servers shareable. “The storage virtualization stack will run inside its own virtual machine (VM) or right on top of the hypervisor. From there, it first virtualizes formerly dedicated drives into shared iSCSI resources accessible from multiple VMs over a conventional LAN.”
...At the point where application workloads consume more than 75% of the physical server resources and the number of servers grows, DataCore’s Gonzalez advises moving the storage virtualization software into a pair of small dedicated servers that can handle the expanded capacity and I/O demands of the bigger environment. This, too, is straightforward, as the software licenses are fully portable from virtual to physical machines. Achieve further cost containment by relocating the original internal drives behind the storage virtualization nodes before any more storage is added.
...Many of the storage applications are dual mode, meaning they can reside in either a virtual machine or a dedicated physical host. DataCore’s Gonzalez believes this gives SMEs the best of both worlds. SMEs can start small, leveraging internal disks, and then as the production environment ramps up, they can move the storage to a dedicated system. Throughout that process, shared storage is available, but cost and complexity are kept to a minimum.
Key Points:
• Shared storage is critical for maximizing the benefits of server virtualization, and now it is also affordable for the small to midsized data center.
• Leveraging the server virtualization project itself either through the use of virtual machines or by repurposing legacy servers is a key element in driving out costs.
• Simplicity is as critical as reducing hard costs; SME personnel typically wear multiple hats, and integrating storage management into the virtual server management console reduces complexity significantly.
Sunday, 9 May 2010
Storage Insights: Virtualizing Storage Along with Servers and Desktops - New Paper
http://www.storage-switzerland.com/Articles/Entries/2010/4/21_Virtualizing_Storage_Along_with_Servers_and_Desktops.html
When considering the potential benefits that typically drive server and desktop virtualization projects, questions about the underlying storage may never come up. They should. If we look at these benefits; maximizing hardware utilization, insulating the software environment from hardware configuration variables and ensuring that applications keep running, despite system outages, the state of the storage system is, indeed, of primary concern. It’s a fact that virtual infrastructures are completely dependent on the behavior of their underlying shared disks.
It’s well known how easily hypervisors migrate workloads from one physical server to another when one goes down. But what’s not as obvious is what happens when the shared storage device that both of those servers rely on is taken out of service. Taking storage systems down for a routine firmware upgrade, a water leak in the computer room, or just capacity expansion can cause major data outages for numerous virtual machines and the hundreds of desktops that they support. This is true regardless of how reliable a particular disk subsystem has proven to be. Fortunately, there are reasonable solutions available to eliminate this risk.
Companies such as DataCore offer the necessary storage virtualization software to:
a) maximize the utilization of existing storage devices,
b) insulate the software environment from hardware differences, and
c) ensure that applications keep running while storage devices are taken out of service.
Similar to server and desktop virtualization products, SANSymphony storage virtualization software abstracts most commonly used storage hardware devices into idealized, virtual disks. In the process, it automatically mirrors the information between physically segregated devices so that complete disk subsystems can be taken out of service without impacting applications.
Basically, this device-independent, virtualization technology allows normal changes that regularly occur in the storage infrastructure to go on without impacting the servers and desktops that depend on it. And storage virtualization software can repurpose existing disk systems attached to servers for use as part of a broader tiered storage pool. This enables the ‘mixing and matching’ of different models and different vendors, swapping these systems out or growing them in the background without affecting business processing.
The same software can also stretch the storage pool across a campus or a metropolitan area to provide additional safeguards against site problems, allowing it to be managed as one centralized resource. Look for built-in capabilities like cross-device snapshots, remote replication and thin provisioning to get the fullest use from all existing disk assets, despite their mutual incompatibilities.
Server and desktop virtualization initiatives promise significant benefits, like asset optimization, simplified operations and improved application uptime. However, the storage infrastructure that supports this compute environment must be up to the task. Layering in storage virtualization software at the outset as a crucial part of the overall virtualization strategy will ensure that you realize the benefits that first justified the move to a virtual infrastructure.
When considering the potential benefits that typically drive server and desktop virtualization projects, questions about the underlying storage may never come up. They should. If we look at these benefits; maximizing hardware utilization, insulating the software environment from hardware configuration variables and ensuring that applications keep running, despite system outages, the state of the storage system is, indeed, of primary concern. It’s a fact that virtual infrastructures are completely dependent on the behavior of their underlying shared disks.
It’s well known how easily hypervisors migrate workloads from one physical server to another when one goes down. But what’s not as obvious is what happens when the shared storage device that both of those servers rely on is taken out of service. Taking storage systems down for a routine firmware upgrade, a water leak in the computer room, or just capacity expansion can cause major data outages for numerous virtual machines and the hundreds of desktops that they support. This is true regardless of how reliable a particular disk subsystem has proven to be. Fortunately, there are reasonable solutions available to eliminate this risk.
Companies such as DataCore offer the necessary storage virtualization software to:
a) maximize the utilization of existing storage devices,
b) insulate the software environment from hardware differences, and
c) ensure that applications keep running while storage devices are taken out of service.
Similar to server and desktop virtualization products, SANSymphony storage virtualization software abstracts most commonly used storage hardware devices into idealized, virtual disks. In the process, it automatically mirrors the information between physically segregated devices so that complete disk subsystems can be taken out of service without impacting applications.
Basically, this device-independent, virtualization technology allows normal changes that regularly occur in the storage infrastructure to go on without impacting the servers and desktops that depend on it. And storage virtualization software can repurpose existing disk systems attached to servers for use as part of a broader tiered storage pool. This enables the ‘mixing and matching’ of different models and different vendors, swapping these systems out or growing them in the background without affecting business processing.
The same software can also stretch the storage pool across a campus or a metropolitan area to provide additional safeguards against site problems, allowing it to be managed as one centralized resource. Look for built-in capabilities like cross-device snapshots, remote replication and thin provisioning to get the fullest use from all existing disk assets, despite their mutual incompatibilities.
Server and desktop virtualization initiatives promise significant benefits, like asset optimization, simplified operations and improved application uptime. However, the storage infrastructure that supports this compute environment must be up to the task. Layering in storage virtualization software at the outset as a crucial part of the overall virtualization strategy will ensure that you realize the benefits that first justified the move to a virtual infrastructure.
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