C210 M1/M2 LSI 1064E only see 4 of 5 disks

I have several UCS C210 M1 and M2s, each has 5 x discs installed (72Go).  Interrupt the boot via Ctrl-c process to configure the RAID LSI 1064E controller but it shows only 4 of 5 readers installed.   I see 5 orders through the option of MMIC inventory.

Why am I not able to see all 5 readers?

Also have another question on the RAID IM option.  I am setting up two RAID arrays each with 2 discs and want a hot spare for them as well.  Each in own need dedicated relief? or 1 hot spare is available for both tables?

Thank you

Todd

You want to consider whether your C210 has a SAS Expander or SAS Extender.  These are maps girls connected to the back of the drive Bay and receive the connection of the controller board.  By default, a C210 will have an extension of SAS.  The SAS Expander is a update available at the time the C210 is ordered, it is not available as an upgrade of the domain.

The SAS Extender can provide connectivity to 4 disks SAS cable connected on it.  The 1064 only has support for a cable and is limited to 4 disks when used with the Extender of SAS.  The 9261 supports two cables and is limited to 8 disks.

The SAS Expander and support up to 16 disks with a single SAS connection.

HTH,

Responsible Dan

Tags: Cisco DataCenter

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