Lenovo 8753 Руководство по эксплуатации - Страница 12

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Internal storage

The server can support up to 16x 2.5-inch drives using the supported SAS/SATA backplane configurations.

The server supports 2.5-inch hot-swap SAS or hot-swap SATA hard disk drives, or 2.5-inch hot-swap SATA

solid-state drives. You can mix drives in the same server if you do not mix drives on the same array.

1.8-inch drive support: The use of 1.8-inch solid-state drives is now withdrawn from marketing.

Backplanes

The x3750 M4 server supports various internal storage configurations based on four different backplanes:

4-drive backplane for 2.5-inch drives: Up to four backplanes can be installed, each requiring one

SAS connection to a supported controller. One RAID controller can connect to two of these

backplanes.

8-drive backplane for 2.5-inch drives: Up to two backplanes can be installed, each requiring two

SAS connections. One RAID controller per backplane.

8-drive backplane with a SAS expander for 2.5-inch drives: Use with the other 2.5-inch drive

backplanes (8-drive or one 4-drive or two 4-drive backplanes) which will result in being able to

connect up to 16 2.5-inch drive bays to the one RAID controller.

Every four drives uses a SAS signal cable except when the 8-drive backplane with SAS expander is used.

When the 8-drive backplane with SAS expander is used, the other backplanes connect to the SAS

expander backplane with the supplied cables and then the SAS expander backplane is connected to the

single RAID controller with two cables. All backplane options include the necessary cables.

See the System x3750 M4 Installation and Service Guide for a description of all supported backplane

combinations.

Standard models (all models except A2x) ship with at least one backplane; see the

section for details. The following table shows the backplane options that are available for a x3750 M4

server.

Table 6. Internal storage expansion options

Part number

Feature

code

00D2020

A4XA

00D2022

A4XC

00D2011

A4XD

* When a server is ordered via CTO, only one 4-drive backplane can be selected. If the order has more than

4 drive bays, 8-drive backplanes will be selected instead.

** Only one backplane with SAS expander (00D2011) can be installed in a server and can be used

connected to a single 8-drive backplane (00D2022), a single 4-drive backplane (00D2020), or two 4-drive

backplanes (00D2020).

Lenovo System x3750 M4 (8753)

Name

4x 2.5" HS SAS/SATA/SSD HDD Backplane

8x 2.5" HS SAS/SATA/SSD HDD Backplane

with controller expansion (SAS expander)

Standard models

Maximum

supported

1**