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  • How to install Hyper-V storage disks
    Channel or iSCSI connection to the Hyper V host Once exposed and initialized to the host the disk is then passed through to a VM on that host As with connected VHDs this process also requires that the VM is powered off when it s an IDE disk type SCSI disks on the other hand can be passed through while the VM runs Once the disk is exposed and visible within the host s Disk Management console it must be initialized but remain offline In the VM s properties menu create a new hard drive and set the Media selection to Physical Hard Disk Next select the correct disk among the list available Pass through disks are useful for applications that do not support VHD encapsulations Because a pass through disk remains in a raw format on a SAN it can be backed up and restored on a file by file basis via SAN based backups If your backup method works better when restored files aren t a part of a VHD this approach might be better Remember though that Hyper V cannot snapshot pass through disks nor can it use host based backups The backup agent on the host cannot see through the VHD and again through its connected disks to complete the backup In clustered environments pass through disks must be exposed to all the Hyper V servers that may host VMs Therefore this may add substantial complexity to large clustered environment iSCSI direct attachment With Fibre Channel SANs you re limited to pass through disks as your primary non VHD option On the other hand if an iSCSI based SAN is available another compelling option is to directly attach a SAN storage disk via iSCSI Typically this configuration brings about interesting management improvements compared with the other two options First and foremost is the complete isolation of iSCSI disk processing from host processing When a VM is connected to an iSCSI disk it does so through its existing storage connection This means that direct attached disks do not require the participation of hosts to function Thus fewer elements must coordinate to maintain the disk s connection Direct attached iSCSI disks are also more portable than pass through disks because of the complete isolation from the host A Hyper V VM with a connected iSCSI disk can be moved to a new cluster or even converted to a different hypervisor while retaining its disk connection Connected iSCSI disks just need to be exposed to the VM and not to each Hyper V host This substantially reduces the complexity in clustered environments Similar to pass through disks iSCSI disks do not encapsulate files and folders therefore both methods share comparable backup and restore characteristics One difference however is that disconnecting an iSCSI disk from a server and reconnecting it to another requires fewer steps As such iSCSI disks can be moved around with relative ease between VMs and even their physical counterparts Furthermore VM to VM Windows Failover Clusters

    Original URL path: http://searchstorage.techtarget.com.au/tip/How-to-install-Hyper-V-storage-disks (2016-02-10)
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  • News, Analysis and Opinion for Storage virtualisation software - SearchStorage.com.au
    end storage systems dubbed VNXe October 19 2010 19 Oct 10 Vendors can t just talk storage any more HDS CTO for Storage Architectures says storage vendors need the products to discuss more than just storage with clients and prospects September 22 2010 22 Sep 10 Storage blog roundup returns with IBM vs EMC NetApp and Oracle It s back Our regular storage blog roundup returns with a look at how storage and infrastructure bloggers have reacted to the 3Par acquisition VMworld 2010 and other recent events April 22 2010 22 Apr 10 HDS and EMC s unified plans ridiculed by 3Par The storage blogosphere has adopted some wonderfully plain speech to describe the current mania for unified storage as EMC HDS NetApp Pillar and 3Par sound off January 20 2010 20 Jan 10 Backup software and VMware Six products compared This tip explains how the major data backup software packages integrate with VMware Infrastructure 3 January 08 2010 08 Jan 10 vSphere and storage The ultimate guide VMware s vSphere offers myriad storage functions and more than a few complications for storage administrators In this story we analyse vSphere s impact on storage and advise how to get the most from the software September 02 2009 02 Sep 09 Analyst Virtual desktops put huge pressure on storage Taneja Group analysts have told VMworld that storage administrators must be involved in the early planning of virtual desktop projects or storage will become a bottleneck that hampers their effectiveness July 08 2009 08 Jul 09 How to Implement Hyper V R2 s new Cluster Shared Volumes feature Learn how to adopt the new Cluster Shared Volumes feature in R2 of Microsoft s Hyper V April 27 2009 27 Apr 09 Beyond vmkfstools alternatives to VMware s backup tools VMware includes decent tools to backup virtual machines But there are more poweful alternatives some free that deserve your attention July 03 2008 03 Jul 08 Managing virtual hard disks in Hyper V This tip covers the different types of VHDs in Hyper V and explains how to work with them using Management Console virtual hard disk wizard and other Hyper V tools July 02 2008 02 Jul 08 Friction grows between storage vendors VMware As the booming server virtualisation market spawns new competitors to VMware how virtual machines connect with storage is becoming a matter of contention among vendors 1 2 ADS BY GOOGLE Latest TechTarget resources CIO AU Security AU Data Backup Disaster Recovery SMB Storage Storage Channel Search CIO com au Internet of Things Food safety apps set to emerge Food safety could emerge as a key application for the Internet of Things in the coming months providing real time visibility in Cloud security culture a building block for today s businesses As organizations today move more data to the cloud it s important to cultivate a cloud security culture and enlist a CISO a new How to do an advanced data analytics project on the cheap Delivering an advanced

    Original URL path: http://searchstorage.techtarget.com.au/info/news/Storage-virtualisation-software (2016-02-10)
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  • DAS vs. NAS vs. SAN: Which is best for virtual storage?
    advanced features such as remote replication or high performance scalability aren t required in your virtual environment For example DAS combined with an internal RAID card used in a branch location where only one physical server is deployed would be a great solution Network attached storage Networked attached storage provides connectivity to the virtual server through a TCP IP connection and storage access is provided at the file level NAS pros and cons include NAS is shareable Resources may be shared by multiple ESX deployments This is a key benefit when using clustered virtual environments and features such as VMotion NAS is scalable in terms of capacity and performance For larger virtual deployments performance becomes a big issue The concentration of I O into a small number of LUNs can potentially result in throughput bottlenecks This is especially likely with advanced features of NAS NAS provides advanced features such as thin provisioning replication and snapshots For many virtual environments these features are particularly beneficial Thin provisioning can be used to limit the amount of real storage provided to virtual hosts which will not use all of the storage they are presented with Snapshots allow virtual machine images to be captured for data backup or used for cloning where multiple virtual images are created from a single gold master image The combination of thin provisioning and snapshots offers the opportunity to create hundreds of virtual machines for very little storage cost This is an extremely efficient provisioning method for development or on demand environments NAS abstracts storage management from the server This means the virtual machine images can be managed and subsequently backed up as a file system NAS can be costly Despite the cost the range of NAS devices on the market is extremely wide from small four disk devices to multi petabyte hardware configurations Storage area networks in a virtual environment Storage area networks provide connectivity to the virtual server using either the Fibre Channel FC or iSCSI protocols SAN storage has the following pros and cons SAN storage is sharable Resources may be easily shared between multiple virtual server hardware devices This is important in clustered virtual server environments SANs are highly scalable both from a capacity and performance perspective For large deployments of virtual servers scalability is extremely important and the whole premise of SAN is to provide high levels of scale SAN storage provides synchronous replication Synchronous replication isn t typically available on NAS implementations and for many environments this may be a key requirement for a disaster recovery strategy SAN environments are highly resilient SAN environments are well equipped with dual fabrics HBAs and highly available storage arrays What type of storage best fits your virtual environment Everyone has different needs and requirements for their virtual environments Choose DAS if cost is an issue your virtual environment is small and if your environment doesn t require advanced features like data replication Choose NAS or SAN if you are building large scale virtual environments NAS is

    Original URL path: http://searchstorage.techtarget.com.au/tip/DAS-vs-NAS-vs-SAN-Which-is-best-for-virtual-storage (2016-02-10)
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  • Using Windows Server Backup and the Diskshadow for Hyper-V backup
    service writers and in this case the Hyper V Volume Shadow Copy Service VSS Simple Diskshadow scripts such as those below will enable you to back up your VMs to disk or to longer term tape storage Diskshadow Script 1 Create a snapshot expose as drive letter copy to separate drive and back up using a third party backup product Pros This commits and copies a complete online backup to a separate set of disk spindles and aids in the case of primary logical unit number LUN or drive disk failures Tape backup I O is not being performed on the same disk spindles as where the VMs reside Cons Another large LUN drive is necessary to hold complete copies of VMs Time and server resources are needed to first move files to a separate drive and then perform tape backup from that drive This process could take hours depending on the number of VMs and the size of their virtual hard drives The assumptions of the script The Hyper V role is installed on the host server Copy the text below and create a text file named DiskShadowRobocopyBasic dsh In this example the virtual machines reside on D if VMs reside on another drive letter or multiple drives you can adjust Create a command file named backupscript W cmd that copies shadow copies to alternate disk location see below DiskShadowRobocopyBasic dsh Assuming your VMs reside on D script cleans old shadows creates shadows and copies files to separate LUN drive backupscript W cmd then unexposes drive LUN Make sure the scripts are in C vsbackup and that C vsbackup cab exists or make the appropriate modifications DELETE SHADOWS ALL SET CONTEXT PERSISTENT SET METADATA c vsbackup cab Backup cab SET VERBOSE ON BEGIN BACKUP ADD VOLUME C ALIAS CP0 ADD VOLUME D ALIAS CP1 CREATE EXPOSE CP1 W EXEC c vsbackup backupscript W cmd UNEXPOSE W Backupscript W cmd watch word wrap C VSBackup richcopy exe W e computername W E RECYCLE BIN SYSTEM MP Pagefile sys To execute the Diskshadow Script above create a command file like the one below VSBackup cmd diskshadow s c vsbackup DiskShadowRobocopyBasic dsh Diskshadow Script 2 Create snapshot expose as mount point and back up using a third party backup product that is mount point aware Pros Less disk space is necessary because the process does not take a full copy of the VM Stateful backup is taken and presented as mount points in a short amount of time allowing for tape backup within a few minutes Cons The third party tape backup system must be able to see operating system mount points This is sometimes a limitation of backup products Backup to tape will use I O from the same disk spindles as the VMs Tape backups should be conducted during periods of low I O on the Hyper V host The assumptions of the script Hyper V role is installed on the host server Copy the text below and create a

    Original URL path: http://searchstorage.techtarget.com.au/tip/Using-Windows-Server-Backup-and-the-Diskshadow-for-Hyper-V-backup (2016-02-10)
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  • Troubleshoot and Solve Storage virtualisation software Problems - SearchStorage.com.au
    can all do the job supporting virtual machines But which works best Find out in this article Continue Reading Using Windows Server Backup and the Diskshadow for Hyper V backup Learn how to backup virtual machines created under Hyper V R2 with Microsoft s Windows Server Backup or Diskshadow Continue Reading How to install and operate VMware Data Recovery Manager Learn how to install and operate VMware Data Recovery VDR the company s first virtual backup tool Continue Reading Use the VMware vStorage API for Data Protection to backup virtual machines Learn how VMware s vStorage API for Data Protection enables backup of virtual machines Continue Reading How to mount Xen virtual machine storage on physical hosts Learn why it s a good idea to have a storage back end mounted to your Xen Server physical host just in case the Xen server won t start up in this tip Continue Reading How to install Openfiler an open source SAN inside Microsoft Hyper V Want a SAN to use for testing but don t want the cost of new hardware This How To offers a procedure to install Openfiler within a virtualised environment to deliver a SAN for peanuts Continue Reading Optimising virtual hard disk performance in Hyper V To improve virtual hard disk VHD performance allocate virtual machines more efficiently better distribute VHD I O load and perform standard disk operations regularly Continue Reading ADS BY GOOGLE Latest TechTarget resources CIO AU Security AU Data Backup Disaster Recovery SMB Storage Storage Channel Search CIO com au Internet of Things Food safety apps set to emerge Food safety could emerge as a key application for the Internet of Things in the coming months providing real time visibility in Cloud security culture a building block for today s businesses As organizations today move more data to the cloud it s important to cultivate a cloud security culture and enlist a CISO a new How to do an advanced data analytics project on the cheap Delivering an advanced data analytics project to the business can cost a fortune But with some imagination CIOs can do it for Search Security com au Weigh the benefits risks of going mobile in the enterprise Smartphone and tablet use in the enterprise can help boost productivity improve employee satisfaction and lower costs However Conquer BYOD risks with mobile device management Bring your own device has a number of inherent security challenges Expert Lisa Phifer explains how a mobile device management The IT security gold rush is on Security budgets in Australia are soaring as hacking incidents reach new levels Search Data Backup Data protection technologies Experts offer predictions Predictions for data protection in 2016 include the resurgence of tape rise of copy data management special optimized options Veeam Availability Suite to get physical complement Veeam CEO Ratmir Timashev talks physical backup the shifting enterprise competitive landscape and why he has no plans to take Arcserve Unified Data Protection upgrade supports instant recovery The new version of

    Original URL path: http://searchstorage.techtarget.com.au/info/problemsolve/Storage-virtualisation-software (2016-02-10)
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  • Storage supplies constrained by Thai floods
    model that will result in increased prices Ober s view is that WD has a greater presence in the non enterprise space and have stated their final assembly plants as well as supply chain have been directly impacted Seagate who traditionally has been strong in the Enterprise space appear to be less affect in terms of final assembly though they are exposed in terms of their supply chain That impact seems to be already affecting consumer and desktop systems with many vendors reporting price increases in consumer drives A recent trek to a local consumer electronics research revealed new 1TB drives selling for more than older 2TB drives A recent Thai Flood Recovery update from Western Digital says that the company has suspended production in two factories that have been inundated These factories account for 60 of WD s production with the remainder in Japan The statement by President and Chief Executive Officer John Coyne is asking customers to remain patient with us for the next few quarters suggesting that recovery is going to take well into 2012 Western Digital as the most affected manufacturer in the market has seen disruption in production of most classes of to varying to degrees With enterprise storage the storage is probably somewhat different CTO Marketing at EMC Computer Systems Clive Gold told us that EMC s supply of enterprise drives has not been affected and EMC does not expect any impact on our business customers Hitachi s CTO for Australia New Zealand at Hitachi Data Systems Adrian De Luca said that Hitachi Has been impacted but not directly What that means is that actual factories supplies and where the end product is actually built has not been impacted However we obviously do source components from other suppliers around the region and we need to ship these devices to get them out of the country Given the closure of roads and ports we do expect some tightness to be around supply None of Hitachi s factories have been damaged at this time although the situation can change at short notice Some production lines have been impacted with customers advised via a letter earlier this month There are a number of SAS and SATA drives that are both enterprise and modular that are impacted De Luca added Hitachi doesn t expect there to be any upwards price pressure with their enterprise customers as those prices are set in long term contracts The impact will be on supply although De Luca told us that he expected to be able the storage volumes customers needed but perhaps not the density Need to know consumer drive supplies to be constrained with pricing to be driven upwards non PC devices likely to increase in price as drive prices rises eg PVRs and gaming devices enterprise storage likely to be supply constrained but pricing not likely to move significantly Dig Deeper on Buying data storage All News Problem Solve Data center upgrade saves ICF International millions Seagate Samsung combine forces

    Original URL path: http://searchstorage.techtarget.com.au/news/2240110861/Storage-supplies-constrained-by-Thai-floods (2016-02-10)
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  • Bad Sectors: the latest storage news
    Department too as one of its Canberra resellers Infront Systems has won SAN disk shelves and SAN disks at the agency UXC Connect has also had a Canberra win picking up just over 65 000 of cash for a new NetApp DS2246 disk shelf at IP Australia There s more disk heading to Antarctica too with Corporate Express winning a 67 000 deal to send more disk to the Australian Antarctic Division Future purchases It s also the season for publication of Annual Procurement Plans in Canberra and a couple have turned up with SANs on the shopping list The Department of Sustainability Environment Water Population and Communities plans to acquire a SAN in the first quarter of the year Either the department is running late or its Tender will pop out any moment now The Australian Sports Anti Doping Authority is also SAN shopping and says it should get the purchase done by the end of the calendar year Past failures One SAN we re told isn t welcome in Canberra belongs to HP which a few folk have suggested was asked to excuse itself from ASIC s desktop virtualisation project Word on the street suggests the project nearly ran aground on underperforming HP kit which was replaced to make the rig work HP has declined to comment on the speculation Ninefold s sneakernet Macquarie Telecom s cool and groovy cloud sub brand Ninefold has announced a sneakernet service that will allow customers to ship it drives for data upload to its cloud The company says the difficulty of uploading large quantities of data to the cloud is a turn off for would be cloud users and hopes its 75 per drive plus 2 50 an hour service will drive adoption of its elastic storage services SmallTree grows in Australia Another SAN sprouting hereabouts comes from SmallTree a vendor which offers Ethernet shared storage and networking solutions for Mac based post production professionals The company s GraniteStor arrays will be sold through new distributor Adimex Dig Deeper on Australian storage news and case studies All News Australian Bureau of Statistics counts on no storage team HP for census How ASIC stops I O storms hurting its SANs Bad Sectors Amazon warns on S3 security UXC and CommVault cuddle Bad Sectors Maritime Safety Authority loves Gartner Blu Ray for servers Load More View All Australian Bureau of Statistics counts on no storage team HP for census How ASIC stops I O storms hurting its SANs Bad Sectors Amazon warns on S3 security UXC and CommVault cuddle Bad Sectors Maritime Safety Authority loves Gartner Blu Ray for servers Load More View All News ADS BY GOOGLE Latest TechTarget resources CIO AU Security AU Data Backup Disaster Recovery SMB Storage Storage Channel Search CIO com au Internet of Things Food safety apps set to emerge Food safety could emerge as a key application for the Internet of Things in the coming months providing real time visibility in Cloud security culture a building

    Original URL path: http://searchstorage.techtarget.com.au/news/1280095928/Bad-Sectors-the-latest-storage-news (2016-02-10)
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  • How ASIC stops I/O storms hurting its SANs
    way ASIC avoids boot storms is to automatically boot up desktop computers at 5 00 AM on Monday morning a time hardly anyone has reached their desk at the organisation s 13 offices As no one is working no one will notice the performance hit the Commission s SANs and networks experience at that time The Commission has also scheduled and randomised updates to its anti virus application As Australia s regulator of financial institutions ASIC s work is sensitive enough that desktop anti virus protection is a security necessity In the pilot phase of its VDI implementation Technical Engineer Jeff O Connor noted the anti virus application s hunger for SAN resources We had assumed traffic would be 80 percent reads and 20 percent writes he told VMWorld 2011 in Las Vegas today The reverse turned out to be true thank in part to the anti virus application initiating three writes to the SAN under certain conditions Most anti virus apps hammer the disk We got hit at 2PM on a Thursday and 400 users went out for an afternoon O Connor told VMWorld explaining the reason for the staggered scheduling of anti virus updates Even with those precautions ASIC found its initial SAN specification could meet the input output requirements VDI imposes We had scoped SAN at a certain number of disks and found we had to almost double the disk count to get the IO we needed he said O Connor also said the organisation tested extensively to determine the optimal LUN size for VDI and settled on 300 gigabytes to support 20 virtual desktops He said the organisation tries to use 90 to 95 of capacity on each LUN This choice has never caused us a problem he told a sizable VMworld crowd I am a conservative guy and my name is on this project I did not want any problems Dig Deeper on Australian storage news and case studies All News Australian Bureau of Statistics counts on no storage team HP for census Bad Sectors the latest storage news Bad Sectors Amazon warns on S3 security UXC and CommVault cuddle Bad Sectors Maritime Safety Authority loves Gartner Blu Ray for servers Load More View All Australian Bureau of Statistics counts on no storage team HP for census Bad Sectors the latest storage news Bad Sectors Amazon warns on S3 security UXC and CommVault cuddle Bad Sectors Maritime Safety Authority loves Gartner Blu Ray for servers Load More View All News ADS BY GOOGLE Latest TechTarget resources CIO AU Security AU Data Backup Disaster Recovery SMB Storage Storage Channel Search CIO com au Internet of Things Food safety apps set to emerge Food safety could emerge as a key application for the Internet of Things in the coming months providing real time visibility in Cloud security culture a building block for today s businesses As organizations today move more data to the cloud it s important to cultivate a cloud security culture and enlist a CISO

    Original URL path: http://searchstorage.techtarget.com.au/news/2240074010/How-ASIC-stops-I-O-storms-hurting-its-SANs (2016-02-10)
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