IBM DS8880 Series Introduction And Planning Manual page 98

Standard drive enclosures and drives
Standard drive enclosures and drives are required components of your storage
system configuration.
Each standard drive enclosure feature contains two enclosures.
Each drive set feature contains 16 disk drives or flash drives (SSDs) and is installed
with eight drives in each standard drive-enclosure pair.
The 3.5-inch storage enclosure slots are numbered left to right, and then top to
bottom. The top row of drives is D01 - D04. The second row of drives is D05 -
D08. The third row of drives is D09 - D12.
The 2.5-inch storage enclosure slots are numbered from left to right as slots D01 -
D24. For full SFF (2.5-inch) drive sets, the first installation group populates D01 -
D08 for both standard drive enclosures in the pair. The second installation group
populates D09 - D16. The third installation group populates D17 - D24.
Note: Storage enclosures are installed in the frame from the bottom up.
Table 31 provide information on the placement of drive sets in the storage
enclosure.
Feature codes for drive sets
Use these feature codes to order sets of encryption disk drives andflash drives for
DS8880.
All drives that are installed in a standard drive enclosure pair or High
Performance Flash Enclosure Gen2 pair must be of the same drive type, capacity,
and speed.
The flash drives can be installed only in High Performance Flash Enclosures Gen2.
See Table 34 on page 87 for the feature codes. Each High Performance Flash
Enclosure Gen2 pair can contain 16, 32, or 48 flash drives. All flash drives in a
High Performance Flash Enclosure Gen2 must be the same type and same capacity.
Table 32, Table 33 on page 87, Table 34 on page 87 list the feature codes for
encryption drive sets based on drive size and speed.
Table 32. Feature codes for disk-drive sets
Feature code Disk size
5308 300 GB
5618 600 GB
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DS8880 Introduction and Planning Guide
Table 31. Placement of full drive sets in the storage enclosure
Standard
drive-enclosures
type Set 1
3.5 inch disk drives D01 - D04
2.5 inch disk and D01 - D08
flash drives
Drive type Drives per set
2.5-in. disk 16
drives
2.5-in. disk 16
drives
Set 2
D05 - D08
D09 - D16
Drive speed in Encryption
RPM (K=1000) drive
15 K Yes
15 K Yes
Set 3
D09 - D12
D17 - D24
RAID support
1
5 , 6, 10
1
5 , 6, 10