On Fri, 16 May 2014 17:47:58 Rohan McLeod wrote:
Russell Coker wrote:
On Fri, 16 May 2014 15:51:40 Rohan McLeod wrote:
We started discussing SSD boot drives and it was suggested that SSD boot drives with both sata 3.0 and PCIe interfaces suffer from a fairly severe slow-down problem after about 6 - 12months use. 1/ Has anyone noticed such a problem ? 2/ If such problem exists any theories ? - all I could think was that somehow boot drives were subject to extreme wear and the reallocated 'cells' were at the end and somehow the replacement 'out-of-sequence' cells; were slowing the drive down in the manner of a fragmented rotating drive ?
There is nothing special about boot drives. Drives just respond to read and write requests, booting is no different from other reads.
Many thanks for your reply Russell; can I take it that:
"......... I’ve documented my unsuccessful experiments with using USB-flash for the root filesystem of a gateway server [2] (and the flash device that wasn’t used for swap died too)......"
indicates that you have also used 'designed for use as harddrive' SSD's and found no such slow down problem ? ie not only should not exist; but does not exist ?
In workstations and servers I use Intel SATA SSDs that are designed for such use. Using USB flash devices (that I got free at trade shows) was an experiment which showed that cheap flash isn't much good. -- My Main Blog http://etbe.coker.com.au/ My Documents Blog http://doc.coker.com.au/