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тАО07-14-2010 10:57 PM
тАО07-14-2010 10:57 PM
EVA4400 maximum.. available space ?
Hi.
I've install EVA4400
default disk group have 20 disks
I set the sparing level double
alarm level 95%
all space are vraid-5
I'm making the report nodw.
unfortunately I fotgot the maximum available space.
anyone help me?
thans in advance...!!
I've install EVA4400
default disk group have 20 disks
I set the sparing level double
alarm level 95%
all space are vraid-5
I'm making the report nodw.
unfortunately I fotgot the maximum available space.
anyone help me?
thans in advance...!!
2 REPLIES 2
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тАО07-14-2010 11:13 PM
тАО07-14-2010 11:13 PM
Re: EVA4400 maximum.. available space ?
I'm not sure if i understand you clearly, but if you just want to know how much usable space you'll have here's the approximate calculation:
X = R - Disk_Size * M - L
Where "R" is total raw space (in your case assuming all disks in group are the same size it will be 20*Disk_Size), M means sparing level (4 in your case), L means how much space you'll loose in RAID (one disk size in your case).
Regards,
Philipp.
X = R - Disk_Size * M - L
Where "R" is total raw space (in your case assuming all disks in group are the same size it will be 20*Disk_Size), M means sparing level (4 in your case), L means how much space you'll loose in RAID (one disk size in your case).
Regards,
Philipp.
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тАО07-15-2010 01:21 AM
тАО07-15-2010 01:21 AM
Re: EVA4400 maximum.. available space ?
Say if you have 20 disks of 300GB,
Formatted capacity of 300GB disk will be 279GB approx
You have double production level for disk group (so minus 4 disk space)
So total formatted capacity 16*279=4464
Usable space after alarm level 95% is =4240
Raid 0 Usable space =4240
Raid 5 Usable space(80% of Raid0 space)=3392
Formatted capacity of 300GB disk will be 279GB approx
You have double production level for disk group (so minus 4 disk space)
So total formatted capacity 16*279=4464
Usable space after alarm level 95% is =4240
Raid 0 Usable space =4240
Raid 5 Usable space(80% of Raid0 space)=3392
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