Infortrend EonServ 4012, Руководство пользователя

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Infortrend Expansion Guide
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Hybrid Expansion Enclosures
Infortrend allows some models to support hybrid expansion enclosure connections. The onboard SAS expansion port (either
dual or single port) supports up to 448 drives for each expansion chain, which is limited by the SAS chip used. Infortrend also
offers SAS 12 Gb/s expansion board for some models, which uses the same SAS chip as the onboard expansion ports. You can
use twice the supported number of drives of up to 896 ( 1792 for EonStor GS/GSc 5000) by cascading the second expansion
chain via the expansion host boards. Do note that not every model supports hybrid expansion enclosures configuration.
For the supported number of drives, see section Overview of Maximum Drives .
Systems that support hybrid expansion enclosures:

EonStor DS/GS/GSe family (12 Gb/s SAS drive-side models)

EonStor GSc family

EonStor GSe Pro 3000 series
Systems that do not support hybrid expansion enclosures:

EonStor DS/GS/GSe family ( 6 Gb/s SAS drive-side models )

EonStor GSa family

EonStor GSi family

EonServ family

EonStor GSe Pro 100/200/1000 series
Expansion Enclosure Number
Before setting up an extra expansion enclosure to an existing configuration, you must set the rotary ID switch using a
flat-blade screwdriver. Do note that each expansion enclosure must have a unique ID within an expansion chain. Currently,
the expansion enclosure's rotary ID switch is numbered from 1 to 15, which means you can only connect up to 15 expansion
enclosures per expansion chain.
IMPORTANT!
To prevent any ID conflicts, ensure that you set a unique ID to each expansion enclosure when connecting in a multi-array
environment.
Figure 1: Expansion Enclosures ID switch