HP 40 SCSI manual Scsi Hot-Plug Offline Hot-Swap, Technology, Rack-Mount Tape, Options

QuickSpecs

HP StorageWorks DAT Drives

Product Highlights

SCSI Hot-Plug and	NOTE: this feature is available for SCSI products. USB variants of HP DAT drives already benefit from
Offline Hot-Swap	hot-plug capability through the USB 2.0 interface.
Technology
	The HP StorageWorks DAT SCSI drives come in two variants that increase your uptime: hot-plug and
	offline hot-swap. With these configurations, you never have to take down your system to replace a failed
	or non-responding tape device.
	Hot-plug tape drives are supported on all HP ProLiant and AlphaServers that have the universal drive
	bay built in to the server. These drives can be inserted or removed without disassembling the server, thus
	enabling the system to be operational 24x7. This configuration also provides the ability to mix tape
	drives and 1" hot-plug hard drives on the same SCSI bus without slowing down the performance of the
	system (supported on the HP Smart Array 5300 controller family and integrated Smart Array controller
	and selected HP AlphaServer host bus adapters).
	The HP StorageWorks Tape Array 5300 supports "offline hot-swap" (sometimes referred to as "warm-
	swap") array modules, including DAT drives. This means the drives can be removed and replaced with
	the power on and the SCSI cables attached to the server. Because the array's SCSI buses are not
	buffered, however, drive replacement should only take place while the SCSI bus is quiescent (no SCSI
	activity from the tape drive or any other device on the same bus). This is similar to HP hot-plug DAT
	drives, though the hot-plug drives are not affected by other devices on the bus.
	With the HP StorageWorks DAT hot-plug tape drives or array modules, the server does not need to be
	taken offline to install the tape drive. Simply insert the tape drive into the server's hot-plug bay or the
	Tape Array 5300's drive bay and install or configure the backup software.
Rack-Mount Tape	HP DAT SCSI drives are supported on the HP StorageWorks 1U and 3U Rack-Mount Kits and the HP
Options	StorageWorks Tape Array 5300. The 3U Rack-Mount Kit and the Tape Array 5300 allow up to four
	internal DAT drives to be installed in 3U of rack space, while the 1U Rack-Mount Kit holds two DAT
	drives in 1U of space. Both the 1U and 3U rack-mount kits use standard internal DAT SCSI drives for a
	low-cost solution, while the Tape Array 5300 uses DAT array modules that provide offline hot-swap
	capabilities and redundant components for high-availability environments.
	Either of these rack enclosures can be configured with separate SCSI buses (channels) for each drive or
	two or more drives per bus using the optional cable kits.
	NOTE: Please refer to the QuickSpecs for HP StorageWorks Rack-Mount Kits at
	http://h18000.www1.hp.com/products/quickspecs/10854_div/10854_div.html
	or the HP StorageWorks Tape Array 5300 web page at
	http://www.hp.com/products1/storage/products/tapebackup/tapearrays/tapearray5300/index.html
	for further information.

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