Tp9300S Raid Features - Silicon Graphics InfiniteStorage TP9300 User Manual

1: Introduction to the SGI InfiniteStorage TP9300 and TP9300S

TP9300S RAID Features

2
The TP9300S RAID system is a variant of the TP9300 that uses Serial Advanced
Technology Attachment (SATA) disk drives instead of Fibre Channel (SCSI-protocol)
disks. Both types of drive arrays are fibre channel attached.
While the form and function of the TP9300 and TP9300S are very similar, it is important
you note the following:
• Serial ATA drives (TP9300S) are not compatible with TP9300 Fibre Channel
(SCSI-protocol) disks and should never be used as spares in TP9300 Fibre Channel
(SCSI-protocol) drive arrays.
• Fibre Channel (SCSI-protocol) drives cannot be used as spares in serial ATA
enclosures.
• The 2822 RAID controller interface in a TP9300S will be different than a 2882 RAID
controller interface. The difference can be confirmed by special marking or part
numbers on the RAID controller canister.
– The 2882 RAID controllers cannot be used as spares or replacements for 2822
RAID controllers.
– The 2822 RAID controllers cannot be used as spares or replacements for 2882
RAID controllers.
• The serial ATA (TP9300S) drive enclosure's front bezel will always be a different
color (purple) than the Fibre Channel (SCSI-protocol) array (TP9300) enclosure.
• The serial ATA drive enclosure will have a different storage capacity than a Fibre
Channel (SCSI-protocol) array using the same number of disks.
• The expansion enclosures contain environmental status modules instead of RAID
controllers. Each environmental status module contains an environmental services
monitor board (ESM) and two slots for SFPs (small form-factor pluggables). The
ESM board is the interface between the controller enclosure and the expansion
enclosure. The ESMs used in TP9300 and TP9300S are not interchangeable.
• The drive interface (ESM) in a TP9300S controller will be slightly different than
those in the TP9300. The difference can be confirmed by special marking or part
numbers on the SATA drive interface.
• Serial ATA ESMs and Fibre Channel (SCSI-protocol) ESMs are not interchangeable.
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