Configuring the Windows software initiators for iSCSI multipathing with iSCSI software Open-E DSS. Part 3: Evaluation of function multipath
http://www.youtube.com/watch?v=aW2rNdQxpaI&hl=en
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On host nexenta1 there is a zfs volume. It’s exported via iscsi and replicated to host nexenta2. With the iscsi target mounted on host xi, a file is pulled from urandom. While it’s being written to the iscsi target, the primary node is failed, and the secondary takes over the ZFS pool. With the import the iscsi target is taken over, and the IP address is also moved. The file still makes it to disk fine.
http://www.youtube.com/watch?v=A4NiDTxzS0o&hl=en
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9
Mar
Here is Part 2 of 3 or 4. Just talking about my 2 HP DL380 G3’s.
http://www.youtube.com/watch?v=9okTyoThauE&hl=en
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9
Mar
The Turnerzworld Server Room in Tokyo. We have an openqrm cluster utilizing 12 DELL 1655MC Blades, and 4 IBM x330’s with openqrm running on a DL380 G3 with dual 3.2Ghz procs and 12GB of RAM. There is a DL380 G2 running openfiler as an iscsi target attached to a FC SAN currently configured with 5 146GB 10k RPM drives on 2Gbps FC.
http://www.youtube.com/watch?v=vEJY8Q-f7-c&hl=en
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Introduction
Mission Critical Data is just what its name says: critical to the core functioning of an enterprise. Mission critical data must be available 24×7 and fully backed up for immediate recovery in the event of disaster. Enterprises are constantly seeking more reliable, more efficient, more convenient and more affordable ways of meeting these needs. SANRAD’s V-Switch 3000 uses Iscsi technology to centrally consolidate, manage, backup and restore mission critical data at a fraction of the cost, in capital and human resources, of existing FC SAN technologies
Mission Critical Requirements and SANRAD’s Solutions
Storage Area Networks (SANs) are used to manage mission critical data and, as they have developed, storage and network administrators have identified three main requirements on a SAN to manage this critical data:
o High Availability: Storage systems and their mission critical data must be available 24×7.
There is no leeway for downtime. Every minute of downtime equals a loss of revenues and credibility for an enterprise.
o Remote Backup and Recovery: Data must be backed up off site to enable remote recovery in the event of disaster. Experts estimate that 30% of companies could not recover from a
catastrophic loss of data and having backups on premises is of no use if the premises are destroyed.
o Manageability: A SAN management system must be able to be centrally managed and provide a consolidated storage solution accommodating different storage subsystems and infrastructures. In addition, the SAN management must not exert added strain on the network and storage administration staff.
o Dynamic Expandability: Storage networks must be able to grow with an enterprise. Systems cannot be taken offline to accommodate this growth and no one wants to search for new storage management solutions every time there is a growth spurt.
SANRAD has taken these requirements and provided comprehensive solutions in a single centrally
managed platform using iSCSI technology.
o SANRAD’s High Availability: The V-Switch 3000 hardware is fully redundant to weather power, processor and fan failures. The V-Switch 3000 configuration database is written to both flash and compact flash memory. The software IP-based SAN configuration provides automatic V-Switch 3000 failover and failback as well as data mirroring. No single point of failure ensures high availability.
o SANRAD’s Remote Backup and Recovery: The V-Switch 3000 can create global IPbased storage networks to allow mission critical data transfer to remote sites within the IP SAN.
o SANRAD’s Manageability: The V-Switch 3000 enables storage pooling across multiple platforms and infrastructures and eliminates the need for host agents. The V-Switch 3000
functions at the network layer and is therefore independent of host OS and storage vendors. The V-Switch 3000 provides storage virtualization and precise LUN carving of the pooled storage,
supporting volume concatenation, mirroring and striping. The locally accessed GUI-based Storage Pro management server is used to centrally configure volumes, monitor status and
manage the storage pool.
o SANRAD’s Dynamic Expandability: The V-Switch 3000 uses existing adapters, network and disk subsystems to form a sophisticated SAN solution ranging from 72 GB to 16 TB. New
storage devices can be added dynamically and their volumes virtualized in real time without taking the system offline or impacting on functioning volume performance. Two V-Switch 3000s
can be combined in a SAN to form a cluster to provide inter-V-Switch 3000 load balancing and failover.
Benefits of iSCSI SAN over FC SAN
When creating a SAN, enterprises find that the traditional answer is FC SAN. However, the investment required to implement an FC SAN is often beyond the means of a young enterprise. As a result, growing enterprises may find themselves delaying the inevitable upgrade to a SAN and, therefore, gambling with
their mission critical data store.
The FC investment comes from four fronts:
o Infrastructure: An FC network demands FC switches, hubs and bridges along with specific
GBICs and cabling. In addition, each host requires dedicated FC HBAs.
o Storage Devices: The storage devices must be costly FC RAID arrays. If an enterprise wants
to maintain its JBOD stores, it must purchase virtualization appliances to convert the JBODs for
use in an FC SAN.
o Software: A variety of software tools is needed to manage all of this new equipment as well as
the dedicated FC HBAs.
o Human Resources: dedicated group of FC storage and networking IT administrators is
needed to manage all of this.
For a growing enterprise, this represents a sizable investment in capital and human resources to acquire,
implement and manage only one aspect of the enterprise’s data flow.
SANRAD’s V-Switch 3000 provides a single integrated hardware/software solution to SAN management:
o Infrastructure: The V-Switch 3000 uses an enterprise’s existing IP infrastructure including
existing Ethernet switches, cabling, GBICs and SFPs. A host’s existing NIC is all that is needed
to connect to the SAN.
o Storage Devices: The V-Switch 3000 supports existing legacy storage devices, both FC &
SCSI, RAID & JBOD, so there is no need to purchase new storage devices. Due to the V-Switch
3000’s storage pooling capabilities, enterprises may have an increase in usable storage space.
o Software: The V-Switch 3000 has both hardware and a software component. There is no need
for additional software beyond the included Storage Pro storage management tool.
o Human Resources: Because the V-Switch 3000 operates over the enterprise’s existing
Internet network, minimal additional knowledge or training is needed to implement or manage the
SAN. The existing network or storage administrator is readily qualified to manage SANRAD’s Iscsi SAN.
Business Case: V-Switch 3000 vs. FC
Typical SAN topographies can be divided into 5 groups according to the number of servers accessing the SAN and the net storage capacity of the SAN.
o Small: 8 servers accessing a net capacity of 500GB.
o Small – Medium: 12 servers accessing a net capacity of 1TB.
o Medium: 16 servers accessing a net capacity of 1.5TB.
o Medium – High: 24 servers accessing a net capacity of 2TB.
o High: 32 servers accessing a net capacity of 3TB.
To best understand the budgetary impact of implementing an FC SAN compared to a SANRAD iSCSI SAN, consider the costs of each for a medium enterprise with sixteen hosts accessing a storage pool of 1.5TB.
In an FC SAN, this would require two FC switches. Upstream of the FC switches there are five server
clusters, including Exchange, SQL and file servers, plus six individual servers. Each server requires FC
software and each server has two HBAs, each connected to a different switch for a total of thirty-two HBAs.
Downstream of the FC switches is a RAID system with RAID 5 and hot spare capabilities and a net capacity
of 1.5TB.
In a SANRAD V-Switch 3000 SAN, this would also require two V-Switch 3000s. Upstream of the V-Switch
3000s there are two multi-Gbit switches but no special host software or HBAs are required. Downstream of
the V-Switch 3000s are the legacy SCSI or FC JBODs with a net mirrored capacity of 1.5TB.
For a medium enterprise, implementing an FC SAN for Mission Critical Data is more than two times as expensive as a SANRAD iSCSI SAN. This expense does not take into consideration the Total Cost of Ownership (TCO), e.g. FC cabling installation costs; cost of human resources to regularly upgrade FC
software and maintain two separate networks or the cost of replacing an FC RAID unit compared to a JBOD
disk. As the size of an enterprise grows, the cost par between FC and iSCSI SAN grows.
Conclusion
SANRAD iSCSI SAN provides all of the key SAN requirements needed to manage, backup and restore
mission critical data with added benefits over FC SAN. SANRAD’s V-Switch 3000 represents a single
integrated hardware/software solution to SAN management, including storage pooling, virtualization,
mirroring, striping and remote backup. The IP-based iSCSI SAN permits remote storage access and
provides greater flexibility in the location of network and storage components within an enterprise and it
does so at a fraction of the cost of an FC SAN.
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You may be ready to implement server virtualisation, but ensuring that each stage of the process is successfully carried out can be easier said than done. This 10 step easy-to-follow guide provides ten expert tips to ensure that server virtualisation is an exercise that is undertaken only once and provides a platform for future application containment.
With the assistance of purpose-built software tools they have engaged consultants to undertake the obligatory capacity planning exercise and armed with that information new hardware has been purchased and the first applications migrated into production. But is that really any way to implement what is truly a paradigm shift in the way applications are delivered to the business? Many organisation’s that have rushed to embrace this technology have found to their cost that further due diligence is required; that the third-party ‘Capacity Planning’ report tell them little more than they already know, certainly not enough to deploy the technology in anger. To ensure server virtualisation is an exercise that is undertaken only once and provides a platform for future application containment, the following 10 tips are provided:
1. Adopt a Strategic Approach
To avoid these pitfalls it is important that organisations take a more strategic approach: align project milestones with the hardware replacement program and proactively plan scalability of the server farm accordingly; scope and define a standard platform; implement a Proof of Concept but replenish the test environment; react to short-term business pressures by implementing tactical requirements strategically.
2. Align with the Business
Aligning with the business therefore means working ‘with the business’, either to overcome these constraints or where this is not possible to recognise them in the design process. It also means ensuring that the organisation’s business strategy and project success criteria form part of the design process:
o What targets for cost savings has it set?
o Does it have intentions to move to a 24 x 7 operation?
o Is the organisation looking to improve its Disaster Recovery capabilities or perhaps intent on implementing a ‘charge-back’ model?
o What Service Levels has the business associated with the applications that are to be virtualised and how can this be achieved?
3. Consider the Underlying infrastructure
A number of questions concerning the underlying infrastructure needs to be considered:
o What are the additional storage requirements?
o Is a Storage Area Network required: – fibre channel or ISCSI?
o How will the storage be presented: CIFS, NFS, Lun or raw device?
o What are the implications for: backup/recovery, business continuity, local & wide area networking?
o How will the training budget be affected?
4. Design a Platform for Growth
To realise these objectives, break the cycle of purchasing hardware to fulfil short-term tactical requirements and lay the basis for utility-based capacity-on-demand, organisations should resist the temptation of only provisioning sufficient capacity to meet short-term needs. Instead they should provide a ‘platform for growth’ – a platform that is scalable – with sufficient capacity to meet longer term needs and that can react quickly to the changing demands of the business.
5. Rationalise your Application Set
Having undertaken a capacity planning exercise the software inventory that generally accompanies it is typically overlooked in a rush to scope the server farm. However unless the organisation already has this information it is a good idea to review the inventory as a pre-requisite to defining a set of standard operating system builds and reducing both the set of applications / versions the organisation is supporting
6. Use Migration Tools with Discernment
In migrating applications to a virtual state, resist the temptation to jump in and make indiscriminate use of Physical-Virtual (P-V) migration tools, which may speed application deployment, but migrate with it a lifetime of patches, fixes and unknown registry changes – ‘rubbish in equals rubbish out’.
7. Understand the impact on Operations
The operational management of the new environment is another area that can typically get overlooked, surprisingly when the loss of an individual server has significantly greater potential business impact. A number of questions need to be addressed:
o How will the new environment be managed; what will be the impact on people and processes; will it fit within the existing management framework or will additional management tools be required?
o How will applications be protected; what service level agreements have been defined?
o What are the backup/recovery options and what disaster recovery plans are required?
o How will new applications be deployed and growth of the environment managed?
o What are the security implications; where are the risks?
o What additional skills / training will be required?
8. Security, Security, Security!
Security as always should be an area of particular consideration during the design and planning process; Virtual Servers and guest operating systems need to be secured like any other operating system.
9. Review the Options
Microsoft and VMware are clear leaders in this space with many subtle, and not so subtle, differences in their features and overall product set. Similar product offerings are also available from a group of smaller companies such as VirtualIron; XenSource and SWsoft. Organisations looking to adopt server virtualisation technology should make themselves aware of the various merits of each vendor before making their platform decision.
10. Engage with a Partner
In order to ensure consolidation is an exercise that is undertaken only once and provides a platform for future application containment, organisations should engage with a partner who will take the time not only to undertake a capacity based assessment of their server estate, but will understand their complete environment
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28
Feb
Openfiler is an operating system. It is based on files, and network-attached storage area network. This is free software. System xinit, this software creates. You can use the function of many to share files. Once you have the software that you have the option of volumes and data on the evolution SAN (Storage Area Network) or NAS (Network Attached Storage is installed).
It can be used for iSCSI SANs. Many individuals use this software with their machines in VMwareWorkstation and ESX Server. RHE Download the required version of Openfiler. E 'offered in 34-bit, 64-bit, ISO, VMware ESX Server and Xen devices. This is a free, downloadable application, and in 2 versions, the version 1.x and 2.0 beta. It can be installed on any computer ranging from an old to a tower high performance. It supports LDAP and volume management enables storage management simple.
Openfiler is a method of storage management that is independent LinuxDistribution. Supports all popular network directory.
It is based on the volume segmentation, iSCSI, share resources, calendar and instant interface for exchanging files. E 'used in the Linux 2.6 kernel as the basis for compact storage management.
Manages the file system can be used with the parameters of performance, to create a logical volume. There are two large storage systems, which is supported by Openfiler. The XFS and Ext.3, the backup files are. The file system savedimprove data protection and reduced levels of regular inspections. In this procedure, any document or unit will be written first recorded file a diary. This reduces the risk of system crashes and protect your data.
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23
Feb
Microsoft Exchange 2010 was released last month. If you have Exchange 2003, this would be a good time to keep the old tyranny ever break behind a version:
The ever growing needs and problems associated with email archiving and preservation, are now integrated with much more capacity than previous versions and without third-party software.
Voice-mail preview delay or alleviate the impending upgrade your phone as a new unitMessaging feature.
New security features of the information gives you the ability much more to prevent disclosure of confidential information.
Exchange 2007 is a 3 to 5 years of standard support and technological innovations that are happening every month, 18-36.
X64 hardware requirements are almost identical and the corresponding x64-server software is far beyond its traditional.
Now, each user has a mailbox to preserve his archive can automatically defined by the organizationand Outlook Web Access is also available. You have to take much better opportunities for compliance and legal. The accessibility of the Internet is just one example of a car better service for users. The new Role-Based Access Control can make the user the ability to pursue their messages. Mailbox resilience as a whole is much better replaced with database availability of continuous replication and the ability to move mailboxes without users online.
While yet to be implemented, the rights ofManagement control for more details Administrators can automatically notify users of potential losses and the confidential reports obtained by such actions. Windows Mobile 6.1 users will also receive views new conversation.
Like most with the line-of-business today requires Exchange 2010 x64 hardware and operating system. Active Directory 2003, but the operating system should be Windows Server 2008, Exchange, and a role of domain controller is not supported. Exchange can easilyvirtualized, but this configuration is not supported with Unified Messaging, and there may be some performance penalty if you advanced networking features such as iSCSI, because the large packets that are not supported by virtual interfaces. Just purchase CALs standard, unless you use the Microsoft Exchange Hosted Mail Security. The exchange was never intended, a repository of documents, you must be a resource mailboxes or public folders on file shares to move.
AlthoughGoogle hype the media as a threat to Microsoft, Gmail more focused on individuals. If you're a small company and have not been studied, Exchange 2010 On-line will provide new functionality, with options much more than Google about half the price of each year ($ 24 against $ 50 per user per year).
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If you have already setup ouu goal that we are now with the developer or the customer can make the connection, there is a YaST module is installed must desfault, we only open-iSCSI packet to add and install. Very fast and easy. Subsequently, there will soon apparently OCFS and jointly create a shared cluster file system memory
http://www.youtube.com/watch?v=8UojNONhQDo&hl=en
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