The right choice of the form factor is solely based on your physical server architecture and recovery mobility requirements.
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Internal Drives (5.25-inch bay): An enterprise tape drive slides directly into a front hot-swap bay of a server, which does not occupy any additional rack unit and is powered directly by the backplane to reduce the clutter of power cables.
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External Drives (Tabletop): The same mechanism is stored in a rugged enclosure in the external tape drive, and is available to a single administrator to share the same backup unit across three different legacy servers using long SAS cables.
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SAS Connectivity: Both form factors need a dedicated SAS Host Bus Adapter; in this case, you cannot use USB-to-SATA adapters. The drive supports 12Gbps SAS handshaking to support streaming writes.
Once your form factor has been selected, make sure that your host server is in place. Interrupts cannot be tolerated in the tape streaming; a consumer SATA controller will drop packets. Don’t leave out buying a compatible
SAS SATA controller card to connect your tape drive, as an integrated motherboard SATA does not have command queuing to support sequential tape workloads. In mixed environments with older parallel drives, 68-pin VHDCI adapters are also available in our SCSI Controllers (Legacy) section.