From 3cbfe67d1920c6280c11ae95386f005af7044aff Mon Sep 17 00:00:00 2001 From: Tobias Powalowski Date: Thu, 26 Jan 2023 15:03:34 +0100 Subject: [PATCH] update md help --- usr/lib/archboot/installer/help/md.txt | 50 +++++++++++++------------- 1 file changed, 25 insertions(+), 25 deletions(-) diff --git a/usr/lib/archboot/installer/help/md.txt b/usr/lib/archboot/installer/help/md.txt index 7cf688419..c80538b50 100644 --- a/usr/lib/archboot/installer/help/md.txt +++ b/usr/lib/archboot/installer/help/md.txt @@ -7,42 +7,42 @@ disks are not supported here. If a disk dies, the array dies with it.\n\n RAID-0:\n You have two or more devices, of approximately the same size, and you want\n to combine their storage capacity and also combine their performance by\n -accessing them in parallel. Like in Linear mode, spare disks are not\n -supported here either. RAID-0 has no redundancy, so when a disk dies, the\n +accessing them in parallel. Like in Linear mode, spare disks are not sup-\n +ported here either. RAID-0 has no redundancy, so when a disk dies, the\n array goes with it.\n\n RAID-1:\n You have two devices of approximately same size, and you want the two to\n -be mirrors of each other. Eventually you have more devices, which you\n -want to keep as stand-by sparedisks, that will automatically become a\n -part of the mirror if one of the active devices break.\n\n +be mirrors of each other. Eventually you have more devices, which you want\n +to keep as stand-by sparedisks, that will automatically become a part of\n +the mirror if one of the active devices break.\n\n RAID-4:\n -You have three or more devices of roughly the same size and you want\n -a way that protects data against loss of any one disk.Fault tolerance\n -is achieved by adding an extra disk to the array, which\is dedicated \n -to storing parity information. The overall capacity of the array is \n -reduced by one disk.The storage efficiency is 66 percent. With six drives,\n -the storage efficiency is 87 percent. The main disadvantage is poor per-\n -formance for multiple, simultaneous, and independent read/write operations.\n -Thus, if any disk fails, all data stay intact. But if two disks fail,all \ -data is lost.\n\n +You have three or more devices of roughly the same size and you want a way\n +that protects data against loss of any one disk.Fault tolerance is a-\n +chieved by adding an extra disk to the array, which is dedicated to stor\n +ing parity information. The overall capacity of the array is reduced by \n +one disk.The storage efficiency is 66 percent. With six drives, the sto-\n +rage efficiency is 87 percent. The main disadvantage is poor performance\n +for multiple, simultaneous, and independent read/write operations. Thus,\n +if any disk fails, all data stay intact. But if two disks fail,all data is\n +lost.\n\n RAID-5:\n -You have three or more devices of roughly the same size, you want to\n -combine them into a larger device, but still to maintain a degree of\n -redundancy fordata safety. Eventually you have a number of devices to use\n -as spare-disks, that will not take part in the array before another device\n +You have three or more devices of roughly the same size, you want to com-\n +bine them into a larger device, but still to maintain a degree of redun-\n +dancy for data safety. Eventually you have a number of devices to use as\n +sparedisks, that will not take part in the array before another device\n fails. If you use N devices where the smallest has size S, the size of the\n entire array will be (N-1)*S. This "missing" space is used for parity\n (redundancy) information. Thus, if any disk fails, all data stay intact.\n But if two disks fail, all data is lost.\n\n RAID-6:\n -You have four or more devices of roughly the same size and you want\n -a way that protects data against loss of any two disks.Fault tolerance is\n -achieved by adding an two extra disk to the array, which is dedicated to\n +You have four or more devices of roughly the same size and you wanta way\n +that protects data against loss of any two disks.Fault tolerance is a-\ +chieved by adding an two extra disk to the array, which is dedicated to\n storing parity information. The overall capacity of the array is reduced\n by 2 disks. Thus, if any two disks fail, all data stay intact. But if \n 3 disks fail, all data is lost.\n\n RAID-10:\n -Shorthand for RAID1+0, a mirrored striped array and needs a minimum of\n -two disks. It provides superior data security and can survive multiple\n -disk failures. The main disadvantage is cost, because 50% of your\n -storage is duplication. +Shorthand for RAID1+0, a mirrored striped array and needs a minimum of two\n +disks. It provides superior data security and can survive multiple disk \n +failures. The main disadvantage is cost, because 50% of your storage is du-\n +plication.