topic Atto FibreBridge and stack with SSD in ONTAP Discussions https://community.netapp.com/t5/ONTAP-Discussions/Atto-FibreBridge-and-stack-with-SSD/m-p/59620#M13971 <HTML><HEAD></HEAD><BODY><P>Hi all,</P><P></P><P>reading at a recent copy of NetApp MetroCluster FAQ there's something not completely clear.</P><P></P><P>I read first:</P><P></P><P><EM>SAS stack depth: 10 shelves per stack are supported, except if SSD is included in the stack.<SPAN style="color: #ff0000;"> If SSD is </SPAN></EM></P><P><EM><SPAN style="color: #ff0000;">configured, the total stack depth is 4 shelves</SPAN>, of which a maximum of 2 (48 drives) may be SSD </EM></P><P><EM>shelves. </EM></P><P></P><P>few rows later, I read<EM><BR /></EM></P><P></P><P><EM><STRONG>How many SAS shelves per stack can I have?</STRONG></EM></P><P><EM>Answer: A maximum of 10 shelves per stack in Data ONTAP 8.1 and higher. Previously 8 was the limit. </EM></P><P><EM><SPAN style="color: #ff0000;">An exception is where SSD is installed with the FibreBridge</SPAN>. In this instance, the maximum stack depth is </EM></P><P><EM><SPAN style="color: #ff0000;">4 shelves,</SPAN> of which a maximum of 2 (48 drives) may be SSD shelves. </EM></P><P></P><P>Well. Is this related to "pure SSD shelves" for all SSD aggregate or is this valid also for FlashPool aggregates? </P><P>So that, if I have in a stack a FlashPool aggregate somewhere the limit is 4 shelves for stack?</P><P></P><P>Regards,</P></BODY></HTML> Thu, 05 Jun 2025 05:33:36 GMT gmilazzoitag 2025-06-05T05:33:36Z Atto FibreBridge and stack with SSD https://community.netapp.com/t5/ONTAP-Discussions/Atto-FibreBridge-and-stack-with-SSD/m-p/59620#M13971 <HTML><HEAD></HEAD><BODY><P>Hi all,</P><P></P><P>reading at a recent copy of NetApp MetroCluster FAQ there's something not completely clear.</P><P></P><P>I read first:</P><P></P><P><EM>SAS stack depth: 10 shelves per stack are supported, except if SSD is included in the stack.<SPAN style="color: #ff0000;"> If SSD is </SPAN></EM></P><P><EM><SPAN style="color: #ff0000;">configured, the total stack depth is 4 shelves</SPAN>, of which a maximum of 2 (48 drives) may be SSD </EM></P><P><EM>shelves. </EM></P><P></P><P>few rows later, I read<EM><BR /></EM></P><P></P><P><EM><STRONG>How many SAS shelves per stack can I have?</STRONG></EM></P><P><EM>Answer: A maximum of 10 shelves per stack in Data ONTAP 8.1 and higher. Previously 8 was the limit. </EM></P><P><EM><SPAN style="color: #ff0000;">An exception is where SSD is installed with the FibreBridge</SPAN>. In this instance, the maximum stack depth is </EM></P><P><EM><SPAN style="color: #ff0000;">4 shelves,</SPAN> of which a maximum of 2 (48 drives) may be SSD shelves. </EM></P><P></P><P>Well. Is this related to "pure SSD shelves" for all SSD aggregate or is this valid also for FlashPool aggregates? </P><P>So that, if I have in a stack a FlashPool aggregate somewhere the limit is 4 shelves for stack?</P><P></P><P>Regards,</P></BODY></HTML> Thu, 05 Jun 2025 05:33:36 GMT https://community.netapp.com/t5/ONTAP-Discussions/Atto-FibreBridge-and-stack-with-SSD/m-p/59620#M13971 gmilazzoitag 2025-06-05T05:33:36Z