From 1f935d0231c9f14bbe5e07c87a31bcacd0492ae6 Mon Sep 17 00:00:00 2001 From: Joseph Gmitter Date: Fri, 24 Aug 2018 17:01:02 -0400 Subject: [PATCH] LUDOC-412 misc: Update byte prefixes to use IEC This patch fixes binary prefixes used when referencing storage size to the IEC definitions: 1024 Ki kibi 1024^2 Mi mebi 1024^3 Gi gibi 1024^4 Ti tebi 1024^5 Pi pebi 1024^6 Ei exbi 1024^7 Zi zebi 1024^8 Yi yobi Signed-off-by: Joseph Gmitter Change-Id: I3fac1dc28e96c34d286f9b14e8cd2b46acb87f53 Reviewed-on: https://review.whamcloud.com/33075 Tested-by: Jenkins Reviewed-by: Andreas Dilger --- UnderstandingLustre.xml | 46 +++++++++++++++++++++++----------------------- 1 file changed, 23 insertions(+), 23 deletions(-) diff --git a/UnderstandingLustre.xml b/UnderstandingLustre.xml index 4a6b166..ffde1f7 100644 --- a/UnderstandingLustre.xml +++ b/UnderstandingLustre.xml @@ -36,7 +36,7 @@ xml:id="understandinglustre"> The Lustre storage architecture is used for many different kinds of clusters. It is best known for powering many of the largest high-performance computing (HPC) clusters worldwide, with tens of thousands - of client systems, petabytes (PB) of storage and hundreds of gigabytes per + of client systems, petabytes (PiB) of storage and hundreds of gigabytes per second (GB/sec) of I/O throughput. Many HPC sites use a Lustre file system as a site-wide global file system, serving dozens of clusters. The ability of a Lustre file system to scale capacity and performance @@ -161,8 +161,8 @@ xml:id="understandinglustre"> Single OST: - 300M objects, 128TB per OST (ldiskfs) - 500M objects, 256TB per OST (ZFS) + 300M objects, 256TiB per OST (ldiskfs) + 500M objects, 256TiB per OST (ZFS) OSS count: @@ -172,15 +172,15 @@ xml:id="understandinglustre"> Single OSS: - 32x 8TB OSTs per OSS (ldiskfs), - 8x 32TB OSTs per OSS (ldiskfs) - 1x 72TB OST per OSS (ZFS) + 32x 8TiB OSTs per OSS (ldiskfs), + 8x 32TiB OSTs per OSS (ldiskfs) + 1x 72TiB OST per OSS (ZFS) OSS count: - 450 OSSs with 1000 4TB OSTs - 192 OSSs with 1344 8TB OSTs - 768 OSSs with 768 72TB OSTs + 450 OSSs with 1000 4TiB OSTs + 192 OSSs with 1344 8TiB OSTs + 768 OSSs with 768 72TiB OSTs @@ -224,8 +224,8 @@ xml:id="understandinglustre"> Single MDT: - 4 billion files, 8TB per MDT (ldiskfs) - 64 billion files, 64TB per MDT (ZFS) + 4 billion files, 8TiB per MDT (ldiskfs) + 64 billion files, 64TiB per MDT (ZFS) MDS count: @@ -240,8 +240,8 @@ xml:id="understandinglustre"> MDS count: - 7 MDS with 7 2TB MDTs in production - 256 MDS with 256 64GB MDTs in testing + 7 MDS with 7 2TiB MDTs in production + 256 MDS with 256 64GiB MDTs in testing @@ -269,22 +269,22 @@ xml:id="understandinglustre"> Single File: - 32 PB max file size (ldiskfs) + 32 PiB max file size (ldiskfs) 2^63 bytes (ZFS) Aggregate: - 512 PB space, 1 trillion files + 512 PiB space, 1 trillion files Single File: - multi-TB max file size + multi-TiB max file size Aggregate: - 55 PB space, 8 billion files + 55 PiB space, 8 billion files @@ -531,7 +531,7 @@ xml:id="understandinglustre"> Object Storage Servers (OSS): The OSS provides file I/O service and network request handling for one or more local OSTs. Typically, an OSS serves between two and eight OSTs, - up to 16 TB each. A typical configuration is an MDT on a dedicated + up to 16 TiB each. A typical configuration is an MDT on a dedicated node, two or more OSTs on each OSS node, and a client on each of a large number of compute nodes. @@ -626,7 +626,7 @@ xml:id="understandinglustre"> - 1-128 TB per OST, 1-8 OSTs per OSS + 1-128 TiB per OST, 1-8 OSTs per OSS Good bus bandwidth. Recommended that storage be balanced @@ -892,10 +892,10 @@ xml:id="understandinglustre"> The maximum file size is not limited by the size of a single target. In a Lustre file system, files can be striped across multiple - objects (up to 2000), and each object can be up to 16 TB in size with - ldiskfs, or up to 256PB with ZFS. This leads to a maximum file size of - 31.25 PB for ldiskfs or 8EB with ZFS. Note that a Lustre file system can - support files up to 2^63 bytes (8EB), limited only by the space available + objects (up to 2000), and each object can be up to 16 TiB in size with + ldiskfs, or up to 256PiB with ZFS. This leads to a maximum file size of + 31.25 PiB for ldiskfs or 8EiB with ZFS. Note that a Lustre file system can + support files up to 2^63 bytes (8EiB), limited only by the space available on the OSTs. Versions of the Lustre software prior to Release 2.2 limited the -- 1.8.3.1