Yes, if you can manage *cost* , separating journal on a different device should improve write performance. But, you need to evaluate how many osd journals you can dedicate to a single OSD as at some point it will be bottlenecked by that journal device BW.
Thanks & Regards Somnath From: ceph-users [mailto:[email protected]] On Behalf Of Yair Magnezi Sent: Tuesday, March 15, 2016 6:44 AM To: [email protected] Subject: [ceph-users] SSD and Journal Hi Guys . On a full ssd cluster , is it meaningful to put the journal on a different drive ? does it have any impact on performance ? Thanks Yair Magnezi Storage & Data Protection // Kenshoo Office +972 7 32862423 // Mobile +972 50 575-2955 __________________________________________ This e-mail, as well as any attached document, may contain material which is confidential and privileged and may include trademark, copyright and other intellectual property rights that are proprietary to Kenshoo Ltd, its subsidiaries or affiliates ("Kenshoo"). This e-mail and its attachments may be read, copied and used only by the addressee for the purpose(s) for which it was disclosed herein. If you have received it in error, please destroy the message and any attachment, and contact us immediately. If you are not the intended recipient, be aware that any review, reliance, disclosure, copying, distribution or use of the contents of this message without Kenshoo's express permission is strictly prohibited. PLEASE NOTE: The information contained in this electronic mail message is intended only for the use of the designated recipient(s) named above. If the reader of this message is not the intended recipient, you are hereby notified that you have received this message 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 the sender by telephone or e-mail (as shown above) immediately and destroy any and all copies of this message in your possession (whether hard copies or electronically stored copies).
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