Indeed I would never actually use it, but symlinks do exist on Windows. http://en.wikipedia.org/wiki/NTFS_symbolic_link
Sanne 2011/8/23 Peter Sturge <peter.stu...@gmail.com>: > The Solr index directory lives directly on the SSD (running on Windows > - where the word symlink does not appear in any dictionary within a > 100 mile radius of Redmond :-) > > Currently, the main limiting factors of SSD are cost and size. SSDs > will get larger over time. Splitting indexes across multiple shards on > multiple SSDs is a wonderfully fast, if not slightly extravagant > method of getting excellent IO performance. > Regarding cost, I've seen many organizations where the use of fast > SANs costs at least the same if not more per GB of storage than SSD. > Hybrid drives can be a good cost-effective alternative as well. > > Peter > > > > On Tue, Aug 23, 2011 at 3:29 PM, Gerard Roos <l...@gerardroos.nl> wrote: >> Interesting. Do you make a symlink to the indexes or is the whole Solr >> directory on SSD? >> >> thanks, >> Gerard >> >> Op 23 aug. 2011, om 12:53 heeft Peter Sturge het volgende geschreven: >> >>> Just to add a few cents worth regarding SSD... >>> >>> We use Vertex SSD drives for storing indexes, and wow, they really >>> scream compared to SATA/SAS/SAN. As we do some heavy commits, it's the >>> commit times where we see the biggest performance boost. >>> In tests, we found that locally attached 15k SAS drives are the next >>> best for performance. SANs can work well, but should be FibreChannel. >>> IP-based SANs are ok, as long they're not heavily taxed by other, >>> non-Solr disk I/O. >>> NAS is far and away the poorest performing - not recommended for real >>> indexes. >>> >>> HTH, >>> Peter >>> >>> >>> >>> On Mon, Aug 22, 2011 at 3:54 PM, Rich Cariens <richcari...@gmail.com> wrote: >>>> Ahoy ahoy! >>>> >>>> Does anyone have any experiences or stories they can share with the list >>>> about how SSDs impacted search performance for better or worse? >>>> >>>> I found a Lucene SSD performance benchmark >>>> doc<http://wiki.apache.org/lucene-java/SSD_performance?action=AttachFile&do=view&target=combined-disk-ssd.pdf>but >>>> the wiki engine is refusing to let me view the attachment (I get "You >>>> are not allowed to do AttachFile on this page."). >>>> >>>> Thanks in advance! >>>> >>> >>> >> >> >
