How Does iSCSI Work?

"iSCSI utilizes existing Ethernet infrastructure to run a modified version of the SCSI protocol over TCP/IP. Source: Adaptec I already outlined the basics of iSCSI: An iSCSI initiator connects to an iSCSI target, which eventually results in a new drive becoming available on the initiator’s host machine. The beauty of this is the way the new storage partition can be accessed: it appears as if it were locally installed in the host machine, although the iSCSI target can be located anywhere within your network. The only real limitation is network performance, which means that you shouldn’t use anything slower than Gigabit Ethernet - though a simple wireless network is technically capable of hosting an iSCSI deployment."

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PerfectDisk Free Defrag

"Talk is cheap but bytes are cheaper: speed is the need with multiterabyte hard disks. It's too easy to leave high-capacity disks badly fragmented, robbing your system of critical performance advantages. There's one type of storage that delivers on speed, but at a high cost (as in money): SSDs (solid-state drives) don't use disks and should never be defragmented. But SSDs can be optimized, with care. PerfectDisk Free Defrag is a powerful disk defragmentation utility that can tell SSDs from HDDs. Its unique SSD Optimize feature consolidates the free space on SSDs with minimal impact, extending their useful life in your system."

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