Dot Hill Systems SANnet II 200, Инструкция по установке, эксплуатации и обслуживанию

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1-2 SANnet II 200 SCSI Array Installation, Operation, and Service Manual • June 2005
Figure 1-2 Rear View of a RAID Array
Also available is a JBOD array (Just a Bunch of Disks), which is similar to an
expansion unit except that it is connected directly to a host server rather than to a
RAID array.
.
Figure 1-3 Rear View of an Expansion Unit or JBOD
Extensive reliability, availability, and serviceability (RAS) features include redundant
components, notification of failed components, and the ability to replace components
while the unit is online.
The RAID array can be used either as a standalone storage unit or as a building block,
interconnected with expansion arrays of the same type. The array can be placed on a
tabletop or rackmounted in a server cabinet or expansion cabinet.
For information about specifications and agency approvals, see Appendix A.
1.2 Array Configurations
The SANnet II 200 SCSI array can be used in the following configurations:
■
Single-controller configuration. A RAID array can be configured with a single
controller in a non-redundant configuration.
■
A RAID array with two controllers. A RAID array can be configured with two
controllers to provide full redundancy.
■
An expansion unit. An expansion unit consists of a chassis with disk drives and I/O
expansion modules. The expansion unit does not include an I/O controller module.
The expansion unit connects to and is managed by a RAID array
■
A Just a Bunch of Disks (JBOD) array. The JBOD array connects to, and is
managed by, a host server.
For more information about JBODs, see Appendix B.