Friday 9 December 2016

Build and Design of HP EVA Storage 4400



  

The HP EVA4400 is a Storage Area Network (SAN) system that provides data storage and security on a much larger scale than a simple RAID or NAS system. It is a reliable and scalable high-end data system.


The EVA4400 is actually a collection of units supplied in its own full-sized rack. Physical drives are contained in drawers which bear up to 12 volumes each in a 2RU space. Up to eight drawers allow for as many as 96 individual physical drives. Power and data connectors were all duplicated to ensure reliability.
The EVA agglomerates all the available physical drives into a single virtual unit where logical drives are allocated from this space. Connected servers are then applied as hosts to these virtual drives. A single virtual drive can be "hosted" by multiple servers. Furthermore, each virtual drive on one SAN array may be formatted for a different operating system.
 In the case of the EVA4400 as many as 96 physical disks may be included, thus vastly increasing data throughput. In a 20TB storage facility, it is far better to use 40x 500GB drives than it is to use 20x 1TB drives. Further redundancy and load balancing is achieved by using Multipath I/O. Dual-copper fiber-channel cables connect disk shelves with the SAN header and attached servers.

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Drives can be added or replaced with a minimum of fuss. The HP EVA Storage 4400 automatically adjusts itself to the number of physical disks available to it. As drives are removed due to failure or added to increase available space, the SAN restripes all the logical drives to cover each drive. If a unit fails, then RAID 1 & 5 redundancy data is used to rebuild the lost drive using whatever space is available. "Spare drives" are not physical units as in traditional RAID, but are in fact just another stripe on the virtual disk.
 Drive rebuilding has the potential to restrict user access to data, but the EVA4400 gives these tasks a lower priority than user requests — therefore, it does its housekeeping when the system is idle. It has clever data arrangement means that restriping does not require rearranging all the data on the disk but only a portion equivalent to the amount of space lost or gained.

The Snapshot allows the user to create a backup copy of a drive so the user can safely explore software upgrades knowing that the user can rapidly restore to the earlier configuration if things go pear-shaped. There is a Snapclone function that, as the name suggests, creates clones of an existing logical disk.
SAN management can be managed remotely from a Web-browser based on any other OS. OS support includes Windows , Linux (Red Hat, SUSE), Vmware ESX, HP-UX, Solaris, AIX, Netware, Mac OS X and OpenVMS.

 HP's iLO (Integrated Lights-Out) gives the full remote control over the hardware ensuring that the emergency administrators can troubleshoot problems from wherever they are. The "Command View" management interface allows you to check on the status of both logical and physical drives, and adjust logical drive properties.
The HP EVA4400 provides extremely high data availability by facilitating much higher I/O rates and eliminating downtime due to maintenance. The EVA also simplifies data management by physically and logically centralizing all the network storage systems.

Navigator System provides builds and maintains any IT infrastructure to fit your needs. Maintenance for your infrastructure gear may be the last thing you think about, but it’s a necessity when protecting and maintaining the value of such expensive IT gear. We are receiving extremely great pricing that you can’t get anywhere else!
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Navigator System offers support, maintenance, repair, service, and AMC services in Bangalore, Chennai, Mumbai, Hyderabad, Delhi, and Pune and all over India.


If you have questions, please feel free to contact us at +91 9845451006 or sales@navigatorsystem.com
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