By Paul Massiglia
The 1st how-to advisor for on-line garage administration with home windows 2000 during this ebook, professional Paul Massiglia first presents a transparent instructional at the ideas of controlled on-line garage after which walks you thru the fundamentals of ways to control your disks and RAID arrays within the home windows 2000 server atmosphere. He offers the entire info procedure directors have to benefit from home windows 2000's robust new features for dealing with huge numbers of disks and RAID subsystems. utilizing either the embedded functions of the home windows 2000 working approach, VERITAS quantity Manager--the de-facto typical for program storage--and different operating examples, Massiglia essentially illustrates tips to manage disks in order that all software facts could be given the proper stability of availability, I/O functionality, and on-line garage rate. Readers will know about on-line garage architectures, failure and non-failure tolerant volumes, RAID, on-line disks, and growing and coping with volumes.
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The 1st how-to consultant for on-line garage administration with home windows 2000 during this booklet, specialist Paul Massiglia first offers a transparent instructional at the ideas of controlled on-line garage after which walks you thru the fundamentals of the way to control your disks and RAID arrays within the home windows 2000 server setting.
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Extra info for Highly Available Storage for Windows Servers
In such servers, disk I/O interfaces are commonly known as host bus adapters, or HBAs, because they adapt the protocol, data format, and timing of the PCI bus to those of an external disk I/O bus, such as SCSI or Fibre Channel. Host bus adapters are typically designed as add-in circuit modules that plug into PCI slots on a server mainboard or, in larger servers, a PCI to memory bus adapter. Small server main boards often include integrated host bus adapters that are functionally identical to the addin modules.
The main drawbacks of external RAID controllers are their limited downward scaling and relatively high cost. Embedded, or internal, RAID controllers normally mount within their host computer enclosures and attach to their hosts using internal I/O buses, such as PCI peripheral component interconnect. Like external RAID controllers, embedded controllers organize disks into arrays and present virtual disks to the host environment. Since there is no accepted standard for a direct disk-toPCI bus interface, embedded controllers require specialized drivers that are necessarily vendor-unique.
Inside-the-disk bad block revectoring (BBR) allows host drivers as well as file systems to treat disks as if there were no defective blocks. From the host’s point of view, a disk is a consecutively numbered set of blocks. Within the disk, block addresses specified by file systems are regarded as logical. The disk translates them into physical media locations, and in so doing, transparently substitutes for defective blocks as necessary. Writing Data on Magnetic Disks A little-recognized fact about magnetic disks is that, there is very little physical feedback to confirm that data has been correctly written.
Highly Available Storage for Windows Servers by Paul Massiglia