Support For Ssd Storage; Using A Ssd As A Boot Device; About The Cache Setting Of Ssds - Fujitsu SPARC Enterprise T5120 Product Notes

Support for SSD Storage

This section describes support for 32GB SATA SSD (Solid State Drives). It also
describes the procedure for updating the SATA Controller with the firmware version
required to use SSDs.
SPARC Enterprise T5120 and T5220 servers can now use 32GB SATA SSDs for
internal storage. The SSDs are hot-pluggable. You can replace the existing 2.5-inch
SAS hard drives with the SSDs. You can also have both 2.5-inch SAS hard drives and
SSDs installed at the same time.
Note – The number of 32GB SATA SSDs which can be installed in T5120/T5220
servers varies depending on the maximum number of HDDs installed in the servers.
-T5120 server
Up to 3 SSDs can be installed in the servers which have a maximum of 4 HDDs.
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Up to 4 SSDs can be installed in the servers which have a maximum of 8 HDDs.
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-T5220 server
Up to 7 SSDs can be installed in the servers which have a maximum of 8 HDDs.
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Up to 8 SSDs can be installed in the servers which have a maximum of 16 HDDs.
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For additional information on the SSDs, refer to the 32-GByte, 2.5-inch, SATA
Enterprise Solid-State Drive Guide.
For instructions on installation and removal of SSDs, see the "Hot-Plugging a Hard
Drive" described in the SPARC Enterprise T5120 and T5220 Servers Service Manual. The
procedures apply to both the disk-based hard drives and SSDs.

Using a SSD as a Boot Device

You cannot use a SSD as a boot device.

About the Cache Setting of SSDs

The SSDs have a setting of internal cache enabled in the initial status. When used in
the cache enabled condition, data may be lost at the time of power failure.
You can disable the internal cache by using a sub command cache of format -e
command after booting the Solaris. This setting is not saved when you reboot the
Solaris.
To ensure data integrity, it is recommended to use an uninterruptible power supply.
2 SPARC Enterprise T5120 and T5220 Servers Product Notes • April 2010