If SSDs are installed in the high-density drive enclosure (6Gbit/s), the SSDs operate at 6Gbit/s regardless of
the interface speed.
The drive characteristics of SAS disks, Nearline SAS disks, and SSDs are shown below.
Table 57 Drive Characteristics
Type
Reliability
Performance
Price (*1)
SAS disks
¡
¡
¡
Nearline SAS Disks
△
△
◎
SSDs
◎
◎
△
◎
: Very good
¡
: Good
△
: Reasonable
*1: Bits are used to compare the prices for each drive type and the price goes up in the following order;
◎
,
¡
,
and
△
.
■
Number of Installable Drives
The maximum number of installable drives is 528 for the ETERNUS DX500 S4/DX500 S3 and 1,056 for the ETER-
NUS DX600 S4/DX600 S3.
The following table shows the number of installable drives when the maximum number of drive enclosures are
installed.
Table 58 Number of Installable Drives
Type
ETERNUS DX500 S4/DX500 S3
ETERNUS DX600 S4/DX600 S3
2.5" type drive enclosures
528
1056
3.5" type drive enclosures
264
528
High-density drive enclosures
480
960
For details on the number of required hot spares, refer to
"■ Number of Installable Hot Spares" (page 29)
5. Hardware Configurations
Optional Product Installation Conditions
184
FUJITSU Storage ETERNUS DX500 S4/DX600 S4, ETERNUS DX500 S3/DX600 S3 Hybrid Storage Systems Design Guide (Basic)
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