On 7/12/25 06:19, [email protected] wrote:
On Thursday, July 10, 2025 10:41:18 PM David Christensen wrote:
On 7/10/25 04:07, songbird wrote:
I was able to get some SSD replacements and want to add them
to my existing setup,
Be sure to do a secure erase before you put the SSD's into service:
https://en.wikipedia.org/wiki/Secure_Erase#Secure_erase
Why do you recommend that? Are you assuming the SSDs songbird got are used,
or do you recommend that even for new SSDs -- if so, why?
Thanks!
1. Remove any and all data for security and legal/ liability reasons.
Only secure erase can erase factory over-provisioned and hidden blocks.
2. Provide a starting condition for maximum write performance (with
subsequent fstab(5) 'discard' and/or fstrim(8)).
I would expect a new SSD to be securely erased by the factory, but would
check this assumption (and do an informal sequential read benchmark):
2025-07-12 12:13:02 root@laalaa ~
# time dd if=/dev/sdb bs=1M | hexdump -C
00000000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
|................|
00000000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
|................|
*
df99e6000
57241+1 records in
57241+1 records out
60022480896 bytes (60 GB, 56 GiB) copied, 204.361 s, 294 MB/s
real 3m24.366s
user 1m25.872s
sys 1m17.036s
David
