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HP has the storage system functions as a backup feature. The hedging done this on several levels. Individual nodes by hardware RAID protected. I am conscious about the cross-protection across multiple nodes is done by a patented network Raid (nraid). This ensures against failures. But still I want to know that why StorageWorks P4300 fail through network RAID. What you people suggests? Should any user go with the HP StorageWorks P4300? More focus on this topic would be satisfying.!!
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HP has the storage system purposes as a backup feature. The prevarication done this on numerous levels. Individual nodes by hardware RAID secluded. The cross-protection across numerous nodes is done by a patented network -Raid (nraid). This makes certain against failures. The failure of a node has no crash on the availability of the data. All these attributes put in the pre-installed management software, SAN / IQ. This is dependent on a Red Hat Linux. The eight SAS disks, each with 450 GB outcomes in RAID 5 array, a net capacity of roughly 2.8 TB. These values transmit to each a box. The P4300 StorageWorks storage system, though, should always buy into play in the cluster. At a lowest amount, to two boxes are needed. If more space is requisited, the administrator simply packaged to another box. The calibration of the system is made by SAN / IQ over an IP route. By unscrambling the nodes into spatially disconnected zones, companies can also defend the site. About cluster, it is probable failure of one or more appliances to check.
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Finally, the storage volumes (LUNs) are to produce. This is in the center with traditional storage systems comparable. The dialogue requires only a few details: the cluster to which the LUN be set to a nraid level and an indication of provisioning and a type. At these parameters, also show some characteristics of StorgaeWorks P4300. The nraid level determines the number of copies to be generated for a volume. Up to four copies can be managed. This requires then, four separate appliances. For a volume against the failure of up to three boxes will be secured. In general, however, probably will be content with a copy. The parameters for provisioning decision on thin provisioning , or full provisioning. Through thin provisioning can save disk space. The data replication, thin provisioning and the type of the volume is always based on a LUN. Thus, different LUNs can also be provided with different parameters. Important data such as are multiple safeguards. This storage class can be created.
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Other features of StorageWorks P4300 includes snapshots and remote copy. A snapshot is a copy of the data generated. Initiated a snapshot either manually by the administrator or periodically by the management software. Snapshots are used, inter alia, to secure a state of a system. The snapshot feature in the StorageWorks supports the Microsoft VSS service (Volume Shadow Service), thus ensuring consistent content. Through Remote Copy snapshots can also transfer to other systems. This is but an asynchronous copy operation. Remote Copy is used whenever a copy of a volume is needed. This applies for example to test scenarios to work with your own data pool. Employing can be remote-copy for disaster recovery purposes, to a site to remove the transfer volumes. These volumes can then include, for example, the virtual machines or data.
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Working with the storage system HP StorageWorks P4300 showed in the test easy and fast. Anyone with the concepts of a iSCSI storage LUNs, thin provisioning and related aspects familiar, is fast to profit by it. The HP StorageWorks P4300 is more than one iSCSI storage. The special feature is its fail-safe by the clusters. The following are some availability features of HP StorageWorks P4300 :
- Redundant hot-plug power supplies redundant fans,
- redundant hot-plug hard drives,
- integrated memory controller with battery-backed DDR2 cache;
- hardware RAID 5, 6 and 10;
- Hyperredundant cluster storage,
- Network RAID Level (per volume) 0 , 5, 6, 10, 10 +1 and 10 +2 for up to four copies of the data so that data remains available even during power or network failure or a failure of disk controllers or storage nodes or the whole site
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