IBM System x3550 M4 22
Internal storage
IBM System x3550 M4 server supports the following internal storage configurations:
Eight 2.5" Slim-SFF SAS/SATA hot-swap hard drive bays
Four 2.5" Slim-SFF SAS/SATA hot-swap hard drive bays
Three 3.5" hot-swap SAS/SATA hard drive bays
Three 3.5" Simple Swap SATA hard drive bays (only available in CTO)
Figure 5 shows the first three of these configurations.
Figure 5. Internal drive configurations
Backplanes
All standard models, except C4x and C5x, ship with four 2.5" Slim-SFF SAS/SATA hot-swap hard drive
bays. Models C4x and C5x ship with three 3.5" SAS/SATA hot-swap hard drive bays. The following table
shows the internal storage expansion options available for the x3550 M4 server.
Table 7. Internal storage expansion options
Part number Feature
code
Description Maximum
supported
6 Gbps drive backplane connectivity
81Y6657 A1HN x3550 M4 plus 4x 2.5" HDD Assembly Kit 1
12 Gbps drive backplane connectivity (support is planned for later in 2013)
None* A464 x3550M4 4x 2.5" HS HDD Assembly Kit for 12Gb RAID 1
00Y7297 A465 x3550M4 2.5" HDD Assembly Kit for 12Gb RAID 1
00Y8597 A4K4 x3550M4 mini-SAS Cable Kit for 12Gb RAID 1
* Available only via CTO or special bid.
Option 81Y6657 upgrades models with four hot-swap HDD bays to eight hot-swap HDD bays. Models A2x
and A3x require H1110 to be replaced by M1115 or M5110 to support eight HDDs. An optical drive can be
installed internally when this option is used.
Option 00Y7297 together with option 00Y8597 upgrades CTO models with four 12 Gb 2.5" hot-swap drive
bays to eight 12 Gb hot-swap 2.5" drive bays.
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