On Nov 8, 2013, at 17:12 , Lists <lists@xxxxxxxxxxxxxxxxxx> wrote: > On 11/08/2013 02:06 PM, John R Pierce wrote: >> On 11/8/2013 12:57 PM, Lists wrote: >>> Saw a trick today, wondering if anybody else had done/tried this? Assume >>> you have a 1U rackmount with 4 front-accessed drive bays, and you want >>> all four bays for a 4-disk RAID5 storage. >>> >>> The idea is to use an internal USB adapter and a couple of bigger USB >>> thumb drives to install to, RAID 1 style, freeing up all your external >>> drive bays. At first, I didn't think that a thumb drive would hold >>> enough for the O/S, but in actual production use for a file server with >>> 14 TB of redundant storage, the OS actually uses less than 6 GB! >> USB thumb drives are really not that suitable for anything doing random >> writes, lots of small files, etc. >> > Agreed! In the case of a file store, there isn't a whole lot going on > with the O/S drive, just the drives that the O/S is hosting. The > original post recommended that /var/log be run off the big partition > being hosted (on spinning disks) to minimize writes to the flash drives. It’s worth noting that FreeNAS does more or less exactly this, using a USB drive with a more-or-less read-only OS image to serve some number of spinning or flash disks. -- Jim Wise jwise@xxxxxxxxx
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