| From: | John R Pierce <pierce(at)hogranch(dot)com> |
|---|---|
| To: | PostgreSQL <pgsql-general(at)postgresql(dot)org> |
| Subject: | Re: Large Databases redux |
| Date: | 2012-03-21 23:29:00 |
| Message-ID: | 4F6A643C.3010103@hogranch.com |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-general |
On 03/21/12 3:20 PM, Martijn van Oosterhout wrote:
> That, and a good RAID controller with BBU cache will go a long way to
> relieving the pain of fsync.
even better than BBU cache is the newer 'flash backed caches'. works
the same, but uses a supercap rather than a battery, and backs the cache
up in a flashchip. typically 1GB cache on the newer SAS2 stuff. This
way you don't need to replace the batteries in 3 years or whatever, or
the complexities of having to move the raid card with the attached
battery if the mainboard or chassis failed.
--
john r pierce N 37, W 122
santa cruz ca mid-left coast
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Chris Albertson | 2012-03-22 03:01:09 | |
| Previous Message | David Boreham | 2012-03-21 22:54:25 | Re: Server choice for small workload : raptors or SSD? |