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IBM-AUSTRIA - PC-HW-Support 30 Aug 1999 |
CONFIGURING SCSI REPEATERS in the 3518 ENCLOSURE
Subject: CONFIGURING SCSI REPEATERS in the 3518 ENCLOSURE
New Netfinity server RETAIN Tip: (this replaces H162824)
Record number: H165084
Device: D/T3518
Model: M
Hit count: UHC00055
Success count: USC0000
Publication code: PC50
Tip key: 001
Date created: O98/10/30
Date last altered: A98/10/30
Owning B.U.: USA
Abstract: CONFIGURING SCSI REPEATERS in the 3518 ENCLOSURE
TEXT:
A SCSI Repeater Card Option P/N 94G7585 FRU P/N 07L8624 is required when
configuring any IBM External Enclosure type 3518 Model 001 or 002 with ANY of
the following configurations on a single SCSI Channel:
- Supported external SCSI cable greater than 1 Meter Long.
- Daisy-Chaining of Backplanes inside the 3518 so that the number of installed drives can exceed six (6).
- More than six (6) Hard Drives inside the 3518.
3518 CONFIGURATION LIMITATIONS/REQUIREMENTS:
- If attaching the 3518 to a Non-RAID Ultra-Wide SCSI Controller/Adapter,
the ULTRA setting on the Controller/Adapter MUST BE DISABLED.
- Ultra Speed is NOT supported on the 3518 Enclosure.
- The MAXIMUM Configuration of a Single SCSI Channel WITHOUT a REPEATER in a 3518 Enclosure is:
- one (1) supported Hot-Swap Backplane.
- six (6) supported slim-high Hard Drives OR three (3) supported half-high Hard Drives.
- A single supported 1 Meter external SCSI cable.
- Six (6) Half-High HDDs can be installed on a single channel without a repeater by daisy-chaining two backplanes.
- The MAXIMUM Configuration of a Single SCSI Channel WITH REPEATER (Option P/N 94G7585 / FRU P/N 07L8624) in a 3518
Enclosure is:
- two (2) supported Hot-Swap Backplanes (daisy-chained).
- twelve (12) supported slim-high Hard Drives (six (6) per Backplane).
- A single supported 4.3 Meter external SCSI cable.
---------------- OR --------------------------------
- three (3) supported Hot-Swap Backplanes (daisy-chained).
- nine (9) supported half-high Hard Drives (three (3) per Backplane).
- A single supported 4.3 Meter external SCSI cable
NOTE: Daisy-chaining Backplanes in the 3518 requires that
the 3518 is connected to any of the following Adapters / Controllers:
- ServeRAID Adapter
- ServeRAID II Adapter / Controller
- PCI Ultra Wide SCSI Adapter / Controller
See the following IBM Website URL for 3518 System Compatibility and Hardware Prerequisites:
http://www.pc.ibm.com/us/compat/storage/matrix.shtml#enclose
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