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

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1-4 SANnet II 200 FC, SATA, and SATA SE Array Installation, Operation, and Service Manual • March 2005
1.1.1.2 SANnet II 200 SATA and SATA SE Array Features
On the SANnet II 200 SATA and SATA SE arrays, RAID controller channels 0 and 1
are dedicated host channels. Channels 4 and 5 are host channels by default but can be
configured as drive channels. RAID controller channels 2 and 3 are dedicated drive
channels that connect to expansion units.
Unlike the SANnet II 200 FC array, on the SANnet II 200 SATA RAID controller host
channels 0 and 1 include four ports per loop (two ports on the upper controller, and
two ports on the lower controller). Channels 0 and 1 support 1-Gbit or 2-Gbit data
transfer rates.
SANnet II 200 SATA RAID controller channels 4 and 5 provide two ports per loop
(one port on each controller). Channels 4 and 5 support only a 2-Gbit data transfer rate.
Each SANnet II 200 SATA RAID controller has two ports designated as disk drive
loops. The drive ports support only a 2-Gbit data transfer rate. These ports connect to
the internal SATA disk drives using internal FC-SATA routing technology. These drive
ports are also used to add expansion units to the configuration.
Like the host channels, each drive channel of the top RAID controller shares a loop
with the matching drive channel on the bottom RAID controller. For example, drive
channel 2 of the top RAID controller shares the same loop as channel 2 of the bottom
RAID controller.
1.1.2 Differences Between SANnet II 200 FC Arrays and
SANnet II 200 SATA Arrays
SANnet II 200 FC arrays use Fibre Channel (FC) disk drives and are supported by Dot
Hill in primary online applications as well as secondary and near-line applications.
SANnet II 200 SATA arrays use serial ATA (SATA) disk drives and are supported by
Dot Hill in either near-line applications such as backup and restore, or in secondary
applications, such as static storage. SANnet II 200 SATA arrays can be used in
multipath and multi-host configurations. They are not designed to be used in primary
online applications.
SANnet II 200 SATA expansion units can be connected to SANnet II 200 FC arrays,
either alone or in combination with SANnet II 200 FC expansion units. Up to five
expansion units can be used in this configuration.
Before installing and configuring your array, review the key differences between the
FC, SATA, and SATA SE arrays
in Table 1-1.