On 1/7/2016 6:43 AM, Helmut Drodofsky wrote: > because of high disk load we plan to move from disk (raid1) to ssd. > > > Are there recommendations for > - manufacturer > - file sytem > - raid1 I strongly recommend SSDs that have write buffer protection, implemented via a internal bank of 'supercaps' for any sort of server application. Suitable drives include Intel S3500, Samsung SM863/PM863, Seagate 1200.2 SAS, etc. Note many of these come in varying levels of write endurance, if your application is write/update intensive, such as an OLTP relational database, you want the high write endurance versions. -- john r pierce, recycling bits in santa cruz