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HP SmartArray642 Vs Perc4/2DC

By lcw ·
I understand both of the card are dual channel.
But HP642 do have 1 internal & 1 external port but Dell Perc4/2DC which have 2 internal & 2 external.How does it really works,really confusing...pls help

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by Addison In reply to HP SmartArray642 Vs Perc4 ...

The Smart Array 642 Controller (SA-642) is a 64-bit, 133-MHz PCI-X, dual channel, SCSI array controller for entry-level hardware-based fault tolerance. Utilizing both SCSI channels of the SA-642 allows you to configure up to 6 internal and 14 external hard drives to store up to 2.9 TB of storage. The 64MB and 128MB BBWC (Battery Backed Write Cache) Enabler upgrade allows the SA-642 controller an option to add transportable BBWC for improved controller performance and increases the total controller memory, up to 192MB. The SA-642 also features complete data compatibility with previous generation's Smart Array controllers to ease data migration from server to server and for easy controller upgradeability.

The Dell PowerEdge Expandable RAID Controller 3 (PERC 3/DC) Dual Channel PCI RAID controller is a high performance intelligent Peripheral Component Interconnect (PCI)-to-Small Computer System Interface (SCSI) host adapter with RAID control capabilities. The PERC 3/DC provides reliability, high performance, and fault-tolerant disk subsystem management. PERC 3/DC is an ideal Redundant Array of Independent Disks (RAID) solution for the internal storage of Dell's workgroup, departmental, and enterprise systems. The PERC 3/DC PCI RAID controller adapter card provides two SCSI channels. Using LVD, you can use cables up to 25 meters long. Throughput on each SCSI channel can be as high as 160 M

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by lcw In reply to HP SmartArray642 Vs Perc4 ...

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