Re: [zfs-discuss] ZFS questions

2006-06-17 Thread Erik Trimble
Saying "Solid State disk" in the storage arena means battery-backed DRAM (or, rarely, NVRAM). It does NOT include the various forms of solid-state memory (compact flash, SD, MMC, etc.);"Flash disk" is reserved for those kind of devices. This is historical, since Flash disk hasn't been functio

Re: [zfs-discuss] ZFS questions

2006-06-17 Thread Mike Gerdts
On 6/17/06, Neil A. Wilson <[EMAIL PROTECTED]> wrote: Darren Reed wrote: > Solid state disk often has a higher failure rate than normal disk and a > limited write cycle. Hence it is often desirable to try and redesign the > filesystem to do fewer writes when it is on (for example) compact flash,

Re: [zfs-discuss] ZFS questions

2006-06-17 Thread Neil A. Wilson
Darren Reed wrote: Solid state disk often has a higher failure rate than normal disk and a limited write cycle. Hence it is often desirable to try and redesign the filesystem to do fewer writes when it is on (for example) compact flash, so moving "hot blocks" to fast storage can have consequence

Re: [zfs-discuss] ZFS questions

2006-06-17 Thread Darren Reed
Mike Gerdts wrote: On 6/17/06, Dale Ghent <[EMAIL PROTECTED]> wrote: The concept of shifting blocks in a zpool around in the background as part of a scrubbing process and/or on the order of a explicit command to populate newly added devices seems like it could be right up ZFS's alley. Perhaps

Re: [zfs-discuss] ZFS questions

2006-06-17 Thread Mike Gerdts
On 6/17/06, Dale Ghent <[EMAIL PROTECTED]> wrote: The concept of shifting blocks in a zpool around in the background as part of a scrubbing process and/or on the order of a explicit command to populate newly added devices seems like it could be right up ZFS's alley. Perhaps it could also be done