… your hardware RAID card or something which has same effect, especially as it become pretty cheap these days. With good RAID as I… is nothing wrong with DRBD, it is great piece of software and it is not what it is running slow but…
Post: Innodb Double Write
August 4, 2006 By 24 Comments
…. Also if software RAID is used page may come on the stripe border requiring multiple IO requests. Same happens with Hardware RAID on power…
Comment: Clustrix benchmarks under tpcc-mysql workload
October 27, 2011 By 9 Comments
… really comes into play is internal locking, and under-laying hardware has less effect. I did not look what is bottleneck… systems. However it is worth to mention that it was software RAID0, not hardware RAID.
Post: Reasons for MySQL Replication Lag
July 29, 2011 By 9 Comments
… of replication lag Hardware Faults Hardware faults may cause reduced performance causing replication to lag. Failed hard drive getting RAID in degraded mode… lag. Same may happen with operating system and other system software involved. In could be even system which queries mysql. I…
Post: Rendundant Array of Inexpensive Servers
August 21, 2008 By 15 Comments
…magnitude more availability issues caused by their own software bugs, DOS attacks and other issues. However …the system so it can tolerate hardware failures should we bother about hardware quality at all ? The …or cost savings are worth it. Another good RAID question is if Hot Spare should be used…
Comment: RAID and Scale Out Discussions
June 12, 2007 By 3 Comments
… that I think software RAID is an symptom of RAIDs death…. It’s a nail in the coffin. We use software RAID but there are… think to many considerations are being made thinking about commodity hardware and really smart people, while in most cases tasks have… think the death will be 3-5 years out. The software infrastructure needs to become stable enough so that commodity people…
Post: Small things are better
October 8, 2006 By 15 Comments
… piece of hardware or software can fail, even if this piece of hardware has some internal redundancy by itself, such as RAID or SAN…. Smaller RAID volumes would typically rebuild faster, smaller database size per system (yet another reason to like medium end commodity hardware) makes…
Post: The Math of Automated Failover
September 18, 2012 By 9 Comments
… right decision. Second is the configuration issue – which can be hardware configuration such as redundant network paths, STONITH, as well as… online). If you follow some of these principles and if software implements them properly there might be less issue with taking… many hardware failure and misconfiguration scenarios which can result in performance problem on single node only such as disk failing in RAID…
Comment: Review of Virident FlashMAX MLC cards
April 25, 2012 By 14 Comments
… issue applies to any RAID-0 volume regardless of hardware or software platform. If even one drive in a RAID-0 stripe set is… from a RAID-0 and ignore the incomplete stripe, but that is my experience with Windows software Raid-0. Maybe some raid-0 is…
Post: Testing Fusion-io ioDrive2 Duo
May 10, 2012 By 21 Comments
…), which can be connected together via software RAID. So I tested in two modes: single drive, and software RAID-0 over two drives. I… kit”. So you need to make sure you have compatible hardware before getting Duo card. I personally ended up with setup… graph I show the results for both single card and raid (Duo). Random writes, async: We see stable and predictable write…
