IBM DS8700, Introduction And Planning Manual

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The DS8800 and DS8700 LFF (3.5") storage enclosure slots are numbered left to
right, and then top to bottom, so that the top row of drives is D01-D04, the second
row is D05-D08, the third row is D09-D12, and for the DS8700, the fourth row is
D13-D16. The DS8800 SFF (2.5") storage enclosure slots are numbered from left to
right as slots D01-D24. For full drive sets, the first installation group populates as
D01-D08 for both enclosures of the pair. The second installation group is D09-D16,
and for the DS8800, the third installation group populates as D17-D24. For half
drive sets, the first installation group populates as D01-D04 of both enclosures in
the pair and the second installation group populates as D05-D08 of both
enclosures, and so on.
Note:
Keep in mind that DS8800 storage features are installed from the bottom up
within a unit, while DS8700 storage features are installed from the top down
within a unit.
Table 14. Disk drive set feature placement - full drive sets
Storage enclosure
type
Set 1 Set 2 Set 3
DS8700 D01-D08 (rows 1 and
2) D09-D16 (rows 3 and
4) n/a
DS8800 LFF (3.5") n/a n/a n/a
DS8800 SFF (2.5") D01-D08 D09-D16 D17-D24
Table 15. Disk drive set feature placement - half drive sets
Storage
enclosure
type
Set 1 Set 2 Set 3 Set 4 Set 5 Set 6
DS8700 D01-D04
(row 1) D05-D08
(row 2) D09-D12
(row 3) D13-D16
(row 4) n/a n/a
DS8800
LFF (3.5") D01-D04
(row 1) D05-D08
(row 2) D09-D12
(row 3) n/a n/a n/a
DS8800 SFF
(2.5") D01-D04 D05-D08 D09-D12 D13-D16 D17-D20 D21-D24
Feature codes for disk drive sets
Use the disk drive feature codes to order the disk drive sets for your storage unit.
Each disk drive set provides 16 disk drives. Table 16 on page 95 provides the
various disk drive sets that you can order (based on disk size and RPM), and the
feature codes to use.
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Introduction and Planning Guide