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Hello-
I just added three 100 GB SATAII-SSD drives to a Clariion CX4-240 for FAST Cache. So far so good. The three drives are in a DAE by themselves with 12 open slots. I want to add additional drives to the shelf. I just had to replace one of the SSD's that went bad and noticed it says SATA-SSD. Does that mean I can only put SATA drives in the remaining 12 slots? The EMC tech said that was the case and that the real high end SSD's (600 GB) are the ones that would allow me to add fiber drives to the shelf. Guess I am a little confused about EMC's SSD aka EFD drives. By the way, when the replacement drive showed up it says EFD?
Storagesavvy
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Posted January 26th, 2012 09:00
The internal interface is different but they are functionally equivalent. The first Gen SSDs had FC/SCSI based interfaces and were made by STEC. The newer SATA based SSDs are from Samsung and have proven to be slightly faster and slightly more reliable. They are great drives.
Richard J Anderson
Storagesavvy
474 Posts
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0
Posted January 26th, 2012 08:00
SSDs are treated like FC drives, regardless if they are FC-SSD or SATA-SSD. You can mix SSDs with FC drives (even in the case of a SATA-SSD).
You cannot mix standard SATA disks with SSD or FC drives.