1.bp 2.SH 3Appendix: 4Maximum File Sizes in the 64-bit File Server 5.PP 6The maximum size of a single file in a Plan 9 file server's 7file system with 64-bit block numbers 8is determined by the file system block size 9(there are single, double, triple and quadruple indirect blocks). 10The maximum size is thus 11$d ( 6 + x + x sup 2 + x sup 3 + x sup 4 )$ 12bytes, where 13$d = blocksize - ( 2 + 2 + 8 )$ 14and 15$x = left floor d over 8 right floor$, 168 being the size in bytes of a 17.I "long long" 18block number. 19.LP 20Note that 21$2 sup 63 ~ = ~ 9,223,372,036,854,775,808 ~ = ~ 8$ 22EB (binary exabytes). 23.LP 24.KS 25.TS 26center ; 27c s s 28c c c 29n n n . 30Maximum File Sizes 31blocksize max. file size in bytes 32_ 331k 239.455G 257,112,525,120 342k 7.73795T 8,507,967,771,456 353k 59.4174T 65,330,091,351,360 364k 251.779T 276,833,619,879,744 375k 770.93T 847,646,649,807,168 386k 1.87752P 2,113,900,586,253,120 397k 4.0645P 4,576,215,491,839,296 408k 7.93382P 8,932,685,435,522,880 41_ 429k 14.3102P 16,111,863,841,429,824 4310k 24.2524P 27,305,748,837,688,128 4411k 39.0823P 44,002,768,605,261,120 4512k 60.4146P 68,020,766,726,780,736 4613k 90.1856P 101,539,987,535,380,800 4714k 130.683P 147,136,061,463,530,304 4815k 184.575P 207,812,990,391,866,688 4916k 254.939P 287,036,132,998,029,120 50_ 5117k 345.293P 388,765,190,105,491,776 5218k 459.621P 517,487,190,032,397,120 5319k 602.407P 678,249,473,940,389,184 5420k 778.66P 876,692,681,183,446,848 5521k 993.946P 1,119,083,734,656,717,120 5622k 1.22502E 1,412,348,826,145,348,416 5723k 1.53012E 1,764,106,401,673,323,840 5824k 1.89319E 2,182,700,146,852,294,464 5925k 2.32213E 2,677,231,972,230,412,608 6026k 2.82551E 3,257,594,998,641,165,120 6127k 3.41264E 3,934,506,542,552,206,656 6228k 4.09355E 4,719,541,101,414,192,960 6329k 4.87905E 5,625,163,339,009,614,144 6430k 5.78076E 6,664,761,070,801,627,968 6531k 6.81111E 7,852,678,249,282,893,120 6632k 7.98341E 9,204,247,949,324,402,496 67_ 6833k 9.31184E 10,735,825,353,524,316,480 69\&... 7048k 60.666E 69,943,138,363,646,533,440 71\&... 7256k 131.149E 151,204,569,706,075,533,120 73\&... 7464k 255.734E 294,841,790,119,418,167,104 75.TE 76.KE 77