ssd

Why can NAND flash memory cells only be directly written to when they are empty?

I'm trying to understand why you have to erase cells before writing to them with respect to SSDs and how they slow down over time. ...

Can a hybrid SSD drive, like a Seagate Momentus XT, add to your developer productivity?

Hi All, Thanks to Mr. Joel Spolsky we all know that an SSD won't exactly help compile time but can help in just about everything else. I'm looking to eke out some more of that "everything else". Launching apps, firing up web, app, database, messaging servers, etc. SSD's are still tough to legitimize raiding the bank. Meanwhile, Seag...

fdisk fix mis-aligned SSD to correct head and sector count

maletor@denmark:~$ sudo fdisk /dev/sdc WARNING: DOS-compatible mode is deprecated. It's strongly recommended to switch off the mode (command 'c') and change display units to sectors (command 'u'). Command (m for help): p Disk /dev/sdc: 64.0 GB, 64023257088 bytes 255 heads, 63 sectors/track, 7783 cylinders Units =...

Tuning SSD MySql Performance

I'm testing SSDs for use with MySql and am unable to see any performance benefits. This makes me feel like I must be doing something wrong. Here is the setup: Xeon 5520 2.26 Ghz Quad Core 12 GB Ram 300GB 15k in RAID 1 64GB SSD in RAID 1 For the test I moved the mysql directory on the SSD. I imported a table with 3 million rows. T...