add a few hardware notes

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+# Personal FSF Sysadmin related notes and todos

diff --git a/work.org b/work.org
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+++ b/work.org
@@ -4,8 +4,93 @@ https://savannah.gnu.org/maintenance/fsf/ .  Some things here will end
 up there after someone edits them for the benefit of readers besides me
 (Ian Kelling).
 
 up there after someone edits them for the benefit of readers besides me
 (Ian Kelling).
 

-* todo
-spd crypt-luks-keys-loopback luks pass should say partition
+* ssd model notes 2024-08
+
+
+solidigm (was intel)
+4t D3-S4520: 91/31 3dpwd
+2t D3-S4520: 91/38 3dpwd
+1t D3-S4520: 91/43 3dpwd
+
+1t D3-S4610: 96/51 3.3dpwd
+2t D3-S4610: 96/46 3.3dpwd
+4t D3-S4610: 96/42 3.3dpwd
+
+1t D3-S4620: 90/54 4.3dpwd
+
+intel:
+1t   DC S3710: 84/45 10dwpd
+1.5t DC S3610: 84/28 3dwpd
+1-2t DC s4510: 97/36 2dwpd
+1-2t DC s4610: 97/51 3dwpd
+1-8t D3-S4610: 97/42 3dwpd
+1-8t D3-S4510: 97/35 6.5pbw (prolly 3dwpd)
+1-2t DC s4500: 72/33 3dwpd
+1-2t DC s4600: 74/65 3dwpd
+
+micron
+5400 95/65
+ pro 960gb: 6dwpd (scales with capacity)
+ max 960gb: 13.6 (scales w capacity)
+
+seagate ironwolf
+1-4t ironwolf 125: 95/90  .75dwpd
+1-4t ironwolf 110: 84/45  1dwpd
+1-4t firecuda 120: 100/90 1dwpd
+1-4t nytro 1361: 94/68 1dwpd
+(sas nytros have high specs)
+1-2t barracuda 120: 90/90  .7dwpd
+
+crucial
+1-4tb mx500 95/90: .5dwpd
+
+synology
+SAT5220-1920G /SAT5220-3840G  98/60 1dwpd
+https://www.synology.com/en-global/products/drives/ssd/enterprise-sat#specs
+
+
+prices
+
+micron 5400 pro https://www.newegg.com/p/2U3-000U-00067
+ 3.84tb $203/tb
+
+ironwolf 125
+ 4tb $94/tb
+
+mx500:
+  2tb $79/tb
+  4tb $72/tb
+
+s4510
+  .96tb $197 newegg
+  3.84tb $127
+  https://www.neweggbusiness.com/product/product.aspx?item=9siv05zhag8836
+
+solidigm
+S4520
+  1.92tb $128 ($244)
+https://www.newegg.com/intel-1-92tb/p/0D9-002V-00AB2?Item=9SIA12KJCU2951
+  7.86tb $113
+
+
+* TODO get download1 crypt pass into spd
+and look for other hosts missing crypt passes
+
+
+
+* d16 bandwidth theoretical limits
+
+500MB/s ssd = 4 Gb/s
+
+LSI 9207-8i, max 6Gb/s per cable
+
+PCIE gen 2 8x = max 32Gb/s, so about 7 ssds
+
+max d16 pcie slots:
+
+1 x4, 2x8, 1x16
+
+* TODO

 
 document the process of being an outbound relay for sourceware
 
 
 document the process of being an outbound relay for sourceware