Essay: IBM i5 Series

Essay: IBM i5 Series
12/04/2011 Comments Off on Essay: IBM i5 Series Academic Papers on Information Technology,Sample Academic Papers admin

Sample Essay

Explain the IBM System i5 Series server disk storage capabilities.

The storage on System i5 servers is about ease of use, data protection, low cost and low maintenance. The System i5 offer many options for disk storage and provides a number of options for data protection. It uses technologies like RAID-5 and RAID-6 which allow the system to continue operating even with multiple disk failure. Mirroring feature, on the other hand, increase the availability of the system by replication of data. Furthermore, disk compression and decompression are also done to increase the storage on a particular disk. This disk compression feature does not affect the CPU utilization as it is done by the disk controller.

The System i5 server supports a number of PCI disk features such as single disk storage capacity from 8.58GB to 141.12 GB with speeds from 10000 to 15000 revolutions per minute (RPM). It currently supports SCSI technology with a data rate of up to 320MB/s. The models in System i5 Series support different disk capacity and a number of supported drives. The System i5 520 server supports a maximum disk storage capacity of 39TB from a maximum of 278 disk drives. The System i5 550 server supports maximum disk capacity of 77TB from 548 maximum drives. Furthermore, the System i5 570+ server supports a maximum number of 1374 drives with maximum storage capacity of 96TB while the System i5 595 supports 2700 drives with a maximum capacity of 381TB. The current System i5 Series servers also support a number of external disk storage devices. These devices include IBM Total Storage DS6000 and IBM TotalStorage DS8000 devices supporting RAID-5, RAID-10, IBM FlashCopy, Global Mirror and Metro Mirror technologies. It also supports IBM Total Storage Enterprise Storage Server Model 750 which is based on a two-way processor with 8GB cache and 2GB NVS and Model 800 which implements symmetrical multiprocessor, 64GB cache,  and 2GB Fiber Channel Host Adapters (Bresenham, McClymont, Powers, Reinhardt & Watson, 2006).

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