![background image](http://html1.mh-extra.com/html/ibm/exp15/exp15_hardware-maintenance-manual_3992345021.webp)
Drive Numbering
There are
two SCSI channels
(1, 2) in the expansion unit.
Each channel uses five SCSI ID numbers. Each disk drive
within the expansion unit has a unique channel number
and SCSI ID number, based on its physical location in the
expansion unit.
When a drive is plugged into the midplane, its channel
number and SCSI ID are set automatically. See the
following illustration for bus and SCSI ID values when
option switch 1 is set to the on (up) state. Use the option
switch on the ESM board to change the ID settings.
(1,0) (2,0) (1,1) (2,1) (1,2) (2,2) (1,3) (2,3) (1,4) (2,4)
The first number represents the channel number and the
second is the SCSI ID.
Notes
For IBM ServeRAID, the view configuration screens
show bay numbers, not SCSI IDs. To calculate the
bay number, add 1 to the SCSI ID.
A blank label is provided in the drive tray behind the
drive latch. Use this label to record the address
location information for each drive before you remove
it. If you install a drive in the wrong bay, data will be
lost.
If you are replacing a drive that is part of a RAID level
1 or RAID level 5 logical drive, ensure that you install
the replacement drive in the correct bay. Failure to
replace the drives in their correct bays can result in
loss of data.
If the two channels are daisy chained using option switch 1
in the off position, then the SCSI IDs are as shown and the
drives are all on the same channel.
(1,0) (1,8) (1,1) (1,9) (1,2) (1,10) (1,3) (1,11) (1,4) (1,12)
Netfinity EXP15 Type 3520
13
Summary of Contents for EXP15
Page 2: ......
Page 8: ...vi IBM Netfinity EXP15 EXP200 EXP500 HMM...
Page 30: ...Parts Listing 1 2 3 4 5 6 7 8 22 IBM Netfinity EXP15 EXP200 EXP500 HMM...
Page 65: ...Parts Listing 1 2 3 4 5 6 7 Netfinity EXP200 Type 3530 57...
Page 68: ...60 IBM Netfinity EXP15 EXP200 EXP500 HMM...
Page 116: ...Parts Listing 1 2 3 4 5 6 7 108 IBM Netfinity EXP15 EXP200 EXP500 HMM...
Page 124: ...116 IBM Netfinity EXP15 EXP200 EXP500 HMM...
Page 125: ...Notice n 1 Related Service Information 117...
Page 132: ...124 IBM Netfinity EXP15 EXP200 EXP500 HMM...
Page 145: ......
Page 146: ...IBM Part Number 09N1393 Printed in U S A S1 L 9839 1...