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| -rw-r--r-- | doc/src/sgml/wal.sgml | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/doc/src/sgml/wal.sgml b/doc/src/sgml/wal.sgml index 1cc5c6f7eb8..b69bc0be680 100644 --- a/doc/src/sgml/wal.sgml +++ b/doc/src/sgml/wal.sgml @@ -1,4 +1,4 @@ -<!-- $PostgreSQL: pgsql/doc/src/sgml/wal.sgml,v 1.65 2010/03/17 17:12:31 petere Exp $ --> +<!-- $PostgreSQL: pgsql/doc/src/sgml/wal.sgml,v 1.66 2010/04/13 14:15:25 momjian Exp $ --> <chapter id="wal"> <title>Reliability and the Write-Ahead Log</title> @@ -61,7 +61,7 @@ particularly likely to have write-back caches that will not survive a power failure, though <acronym>ATAPI-6</> introduced a drive cache flush command (FLUSH CACHE EXT) that some file systems use, e.g. <acronym>ZFS</>. - Many solid-state drives also have volatile write-back + Many solid-state drives (SSD) also have volatile write-back caches, and many do not honor cache flush commands by default. To check write caching on <productname>Linux</> use <command>hdparm -I</>; it is enabled if there is a <literal>*</> next |