Re: New Amanda Community release 3.5.2 Has Arrived! -- email bounce

Il 14/09/2022 19:00, gene heskett ha scritto:

> Waiting for 2T SSD's to become affordable, if they ever do.Depends on your definition of "affordable".

I bought 2 2TB NVMes at about 300€ each... But SSDs and NVMes have a 
quite "limited" life. Look at TBW numbers. Many SSDs and NVMes have some 
cache RAM for sectors that get rewritten very often, but backups tendo 
to be sequential so the cache is nearly useless. Once upon a time there 
were flash-backed ramdrives: controller + RAM + SSD + battery, all the 
flash contents fitted in the RAM, so the flash was never written unless 
the battery got discharged enough. Safe assumption: battery dicharging = 
host off = no ongoing writes. Needless to say the cost was really high 
and they where usually reserved for (parts of) databases.

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Diego Zuccato
DIFA - Dip. di Fisica e Astronomia
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