Date: Tue, 02 Nov 2004 11:09:41 +0000 From: Jeremy Faulkner <gldisater@gldis.ca> To: =?Big5?B?sbasd7jqsFRLZXZpbg==?= <kevin.lai@jcnet.com.tw> Cc: freebsd-questions@freebsd.org Subject: Re: The question about storege Message-ID: <41876AF5.1010804@gldis.ca> In-Reply-To: <JCNET-MAILMVtqOEiCo00000302@jcnet.com.tw> References: <JCNET-MAILMVtqOEiCo00000302@jcnet.com.tw>
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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ±¶¬w¸ę°TKevin wrote: | Hallow Sir | | Can you tell me about tke FreeBSD can get how much maxma space in | partition. | I have one storege 15 BAYS and every BAY have 250GB HDD | When I greating 7 BAYS HDD in RAID5 | But I just only get 1TB | Can you tell me why??? | Tks a lot | | | B.R | | | | By Kevin Hard drive capacities are in 1KB = 1000 Bytes, the operating system uses 1KB = 1024 Bytes. So those 250GB drives are closer to ~230GB drives. In raid 5 you loose capacity equal to 1 drive for the parity information, leaving 6 * ~230GB = ~1380GB. When you create a ffs file system, newfs leaves some space that only root can write to, this is typically 8% of the drive. In this case, that's about 110GB.Leaving ~1269GB available to the system. You can use tunefs to reduce the percentage of the drive that is reserved for root's use. Does this help clarify the situation? - -- Jeremy Faulkner <gldisater@gldis.ca> -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.6 (FreeBSD) Comment: Using GnuPG with Thunderbird - http://enigmail.mozdev.org iD8DBQFBh2r0fb0Lle2MIEIRArDMAJwJcDSEeTwUk5c99G/lTAvQp90UWQCeOR3m coQWDqeA6oGQSz8ZOnV5B5o= =COz3 -----END PGP SIGNATURE-----
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