2 ms·
Isn't it usually a RAID-1 config of 2-3 cards in any situation that actually matters? Thinking of high end cameras, boot drives for VM hosts, etc: http://www.r
by mikepurvis 8y ago
Isn't it usually a RAID-1 config of 2-3 cards in any situation that actually matters? Thinking of high end cameras, boot drives for VM hosts, etc:
http://www.running-system.com/microsd-card-raid-1-vmware-esxi-boot-device/ http://www.running-system.com/microsd-card-raid-1-vmware-esx...
https://www.howtogeek.com/392378/what%E2%80%99s-the-big-deal-about-dual-storage-card-slots-for-cameras/ https://www.howtogeek.com/392378/what%E2%80%99s-the-big-deal...
- monocasa 8y agoI've seen controller bugs that'll take out all 3 cards if given the same access pattern.
- mikepurvis 8y agoHow likely is that if you have cards from different vendors?
- monocasa 8y agoAre you shipping a product or dealing with a fleet? You don't want two different items on your BoM just because you don't trust the vendor to actually ship a usable product.
- TickleSteve 8y agoAll FLASH devices have an erase limit before the sector becomes non-eraseable, likely it was not a bad controller but bad choice of filesystem or bad application behaviour that was causing excessive wear in a small location.
- monocasa 8y agoWith the right access pattern we could hit it at 80kb/sec distributed writes for six hours on an SD card with a wear leveling FTL, which shouldn't be possible. We confirmed with the vendor that it was a controller bug where the FTL was losing track of a virt to physical sector mapping. Also Flash isn't an acronym and shouldn't be capitalized like that.