Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
Sounds like you want to run Raid1 (drbd) over Raid0 (ssd+md?). This is more fragile than Raid0 over Raid1, so you might consider implementing Raid0 using DM over multiple drbd devices, each mirroring a single ssd. Regards, Andreas On 07/23/14 17:45, Robinson, Eric wrote: > > We have many DRBD clusters in production and it has always worked > great. Our cluster nodes have always had RAID 5 arrays consisting 6x > spinning drives. Recently we started using servers with SSD drives. > After some research, we find that RAID 5 is not recommended because it > (supposedly) causes write amplification and shortens the life of the > drives. However, we really do not want to give up storage space by > switching to RAID 10. We are seriously considering using RAID 0 in our > database servers, and using DRBD as "network RAID 1." What do you guys > think of that? Terrible idea? > > -- > > Eric Robinson > > > > Disclaimer - July 23, 2014 This email and any files transmitted with > it are confidential and intended solely for > *drbd-user at lists.linbit.com*. If you are not the named addressee you > should not disseminate, distribute, copy or alter this email. Any > views or opinions presented in this email are solely those of the > author and might not represent those of Physicians' Managed Care or > Physician Select Management. Warning: Although Physicians' Managed > Care or Physician Select Management has taken reasonable precautions > to ensure no viruses are present in this email, the company cannot > accept responsibility for any loss or damage arising from the use of > this email or attachments. > > > _______________________________________________ > drbd-user mailing list > drbd-user at lists.linbit.com > http://lists.linbit.com/mailman/listinfo/drbd-user -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.linbit.com/pipermail/drbd-user/attachments/20140723/24e95c91/attachment.htm>