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NewswireToday - /newswire/ -
London, United Kingdom, 06/30/2007 - A new set of programs have been added to Data Savers - server recovery tools, which enable the team to deal with the ever growing demands for a speedy and maximum recovery of data from RAID servers using RAID 5 and SRAID storage systems.
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The demand for speed and capacity in today’s fault tolerate RAID storage system, has dictated the need for a new bread of programs and tools to assist our server team in dealing with RAID recovery issues including the new SRAID/EMC RAID and the multi volume SAN and NAS systems.
Logical volume
The concept of a logical volume is very similar to a logical drive. A logical volume is composed of one or several logical drives, the member logical drives can be the same RAID level or different RAID levels.
The logical volume can be divided into a maximum of 8 partitions. During operation, the host sees a non-partitioned logical volume or a partition of a partitioned logical volume as one single physical drive.
NAS
A Storage Area Network (SAN) is an independent network for storage subsystems, free from the rest of the computer network. In effect, a SAN removes the storage from the servers; thus liberating the storage devices from the ownership of the servers. In such a setup where no server has ownership of storage subsystems, any server can gain access to any storage device. In other words, any user can gain access to any storage device of the SAN, regardless of the physical location of the storage or the user.
In addition to offering any-to-any connections, a SAN creates a scaleable environment. Since storage and servers are independent from each other, storage devices or servers can be added or removed from their respective networks without affecting each other. Storage devices can be added to the SAN without any worry about a server's configurations. Isolating the potential disruptions of the servers from those of the storage reduces potential for interruptions.
SAN (Storage Area Networking) is designed around and encapsulated SCSI protocol. The most popular physical connections are based on high-speed Optical and Copper Fiber interconnects and can be shared via a hub or switched, much like the more common networking protocols. In this type of system data is transferred over a storage loop to the various peripheral devices on the SAN. This is essentially a private network whose bandwidth is 100MB/sec and that can support up to 128 devices. There is also a switching technology available that will allow over 15 million devices to be addressed and configured within a single switched fabric network, but the full specifications for this standard have not yet been formalized. The storage medium for SAN is based on SCSI disk and tape drives or on the newer Fiber Channel interface drives now entering the market.
The creation of an independent SAN further enhances the workflow of information among storage devices and other systems on the network. Additionally, moving storage-related functions and storage-to-storage data traffic to the SAN relieves the front end of the network, the Local Area Network (LAN), of time consuming burdens such as restore and backup.
The advantages of NAS over conventional server-attached storage can be summed up in three words: economy, speed, and ease. The NAS device sits on the network and is optimized for a single purpose: to pump data to users efficiently without the overhead and complexity of general-purpose servers. NAS devices can produce improved file access performance at a substantially lower cost than general-purpose network servers. When factoring in the additional cost savings generated with plug-and-play installation that literally takes just minutes and ongoing reduced management costs, NAS is a true bargain for network storage needs.
NAS is often contrasted with SANs, but NAS is actually under the "storage network" umbrella. The major difference is that the SAN is channel attached, and the NAS is network attached. It should also be noted that adding or removing a NAS system is like adding or removing any network node.
The system has some new added features that deal with the new bread of high speed hard disk Serial Attached SCSI (SAS), and iSCSI.
With built in validation for SQL and Exchange databases, in addition to standard static files, the new software code named “Leap Frog” has been tested successfully last Friday.
Data Savers regional manager, Alex Hansen said “LF 1.0 would make a significant impact on our service level agreement cutting both time and cost, that would benefit our clients”
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info[.]datasavers.co.uk 
