| 1 |
On Wed, 2008-12-17 at 12:30 -0800, kashani wrote: |
| 2 |
> Grant wrote: |
| 3 |
> > Do you guys think RAID1 is unnecessary with an SLC SSD drive? |
| 4 |
> |
| 5 |
> No need for RAID1, brand new technology always works right in the first |
| 6 |
> generation. There are never problems. :-D |
| 7 |
> |
| 8 |
> It would be interesting to run RAID1 between an SSD and SATA drive. I |
| 9 |
> wonder what sort of issues the disparity in speed would cause. |
| 10 |
|
| 11 |
WRT writes it will pretty much nullify the advantage of having the SSD |
| 12 |
since all writes will be the speed of the slowest drive (the SATA). A |
| 13 |
write request is not completed until all mirrors are written to. |
| 14 |
|
| 15 |
You likely will have a slower reads as well since nearly half the time |
| 16 |
the reads are coming from the much slower SATA drive (i.e. the time |
| 17 |
you'll be waiting on the seeks/reads on the SATA will be much longer |
| 18 |
than all the reads on the SDD). |
Archives