I'm not sure if the megacli tools will work with your model, it would have to be tested. They tend to be able to control LSI RAID controllers to varying degrees. The advantage of using JBOD mode vs raid-single-disk is that you may run into issues when swapping drives, the drive letters may change. Also, JBOD mode removes a layer of operational complexity. Thanks, Jacob >-----Original Message----- >From: Markus Goldberg [mailto:goldberg@xxxxxxxxxxxxxxxxx] >Sent: Friday, April 24, 2015 5:15 AM >To: Weeks, Jacob (RIS-BCT); ceph-users@xxxxxxxxxxxxxx >Subject: Re: SAS-Exp 9300-8i or Raid-Contr 9750-4i ? >Hi Jacob, >are you sure, that megacli is correct for the 9750-4i (not 9750-4i4e) ? >The 9750-4i is not in the list of supported devices. >btw, what makes the difference between jbod and raid-single-disk? Thanks, Markus Am 23.04.2015 um 13:32 schrieb Weeks, Jacob (RIS-BCT): >> The 9750-4i may support JBOD mode. If you would like to test, install > >the MegaCLI tools. (Warning, this will clear the RAID configuration on >> your device) >> >> This is the command for switching the RAID controller to JBOD mode: >> >> #megacli -AdpSetProp -EnableJBOD -1 -aAll >> >> Thanks, >> >> Jacob >> >> -----Original Message----- >> From: ceph-users [mailto:ceph-users-bounces@xxxxxxxxxxxxxx] On Behalf >> Of Markus Goldberg >> Sent: Thursday, April 23, 2015 5:41 AM >> To: ceph-users@xxxxxxxxxxxxxx >> Subject: SAS-Exp 9300-8i or Raid-Contr 9750-4i ? >> >> Hi, >> i will upgrade my existing Hardware (in 3 SC847-cases with 30 HDDs each) the next days. >> Should i buy a SAS-Expander 9300-8i or keep my existing Raid-Contr 9750-4i. >> >> The 9300 will give me real Jbod , the 9750 only single-disk Raids. >> >> Does this make a real difference ? Should i spend or keep money? >> >> -- >> MfG, >> Markus Goldberg >> >> -------------------------------------------------------------------------- >> Markus Goldberg Universität Hildesheim >> Rechenzentrum >> Tel +49 5121 88392822 Universitätsplatz 1, D-31141 Hildesheim, Germany >> Fax +49 5121 88392823 email goldberg@xxxxxxxxxxxxxxxxx >> ---------------------------------------------------------------------- >> ---- >> >> _______________________________________________ >> ceph-users mailing list >> ceph-users@xxxxxxxxxxxxxx >> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com >> >> >> ---------------------------------------- The information contained in this e-mail message is intended only for the personal and confidential use of the recipient(s) named above. This message may be an attorney-client communication and/or work product and as such is >privileged and confidential. If the reader of this message is not the intended recipient or an agent responsible for delivering it to the intended recipient, you are hereby notified that you have received this document in error and that any review, dissemination, distribution, or copying of this message is strictly prohibited. If you have received this communication in error, please notify us immediately by e-mail, and delete the original message. -- MfG, Markus Goldberg -------------------------------------------------------------------------- Markus Goldberg Universität Hildesheim Rechenzentrum Tel +49 5121 88392822 Universitätsplatz 1, D-31141 Hildesheim, Germany Fax +49 5121 88392823 email goldberg@xxxxxxxxxxxxxxxxx -------------------------------------------------------------------------- ---------------------------------------- The information contained in this e-mail message is intended only for the personal and confidential use of the recipient(s) named above. This message may be an attorney-client communication and/or work product and as such is privileged and confidential. If the reader of this message is not the intended recipient or an agent responsible for delivering it to the intended recipient, you are hereby notified that you have received this document in error and that any review, dissemination, distribution, or copying of this message is strictly prohibited. If you have received this communication in error, please notify us immediately by e-mail, and delete the original message. _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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