Andy wrote: > > > --- On Mon, 7/18/11, David Rees <drees76@xxxxxxxxx> wrote: > > > >> In this case is BBU still needed? If I put 2 SSD > > in software RAID 1, would > > >> that be any slower than 2 SSD in HW RAID 1 with > > BBU? What are the pros and > > >> cons? > > > > What will perform better will vary greatly depending on the > > exact > > SSDs, rotating disks, RAID BBU controller and > > application.? But > > certainly a couple of Intel 320s in RAID1 seem to be an > > inexpensive > > way of getting very good performance while maintaining > > reliability. > > I'm not comparing SSD in SW RAID with rotating disks in HW RAID with > BBU though. I'm just comparing SSDs with or without BBU. I'm going to > get a couple of Intel 320s, just want to know if BBU makes sense for > them. Yes, it certainly does, even if you have a RAID BBU. -- Bruce Momjian <bruce@xxxxxxxxxx> http://momjian.us EnterpriseDB http://enterprisedb.com + It's impossible for everything to be true. + -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
