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тАО06-09-2004 04:18 AM
тАО06-09-2004 04:18 AM
I have a VA7100 currently installed with 10 36GB drives. I am wanting to add 73GB drives, I know this can be done. Our reseller says I have to add 4 of these to the array but we won't get much space due to overhead. Here are my questions:
1) Do I have to add 4 73GB drives?
2) How much space do I gain? I figure 263GB.
I based this on losing only 1 73GB drive and not a 36GB drive for hot spare. Is this true as well?
3) If I have to add 4 73GB drives then from a cost/gb am I better off adding 4 more 36GB drives, which are about $600/drive cheaper?
Just some thoughts I am having. Any help is greatly appreciated.
1) Do I have to add 4 73GB drives?
2) How much space do I gain? I figure 263GB.
I based this on losing only 1 73GB drive and not a 36GB drive for hot spare. Is this true as well?
3) If I have to add 4 73GB drives then from a cost/gb am I better off adding 4 more 36GB drives, which are about $600/drive cheaper?
Just some thoughts I am having. Any help is greatly appreciated.
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3 REPLIES 3
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тАО06-09-2004 04:32 AM
тАО06-09-2004 04:32 AM
Re: VA7100 Question
1) I don't know.
2) It depends on your config. What array mode are you in? Do you have Active Hot Spare turned on?
Here are some scenarios for you:
Autoraid mode - Active Hot Spare=AUTO -
10 x 36 GB drives = 215.4 GB Usable
10 x 36GB drives + 4 x 73GB drives = 411 GB Usable
Autoraid mode - Active Hot Spare=0 -
10 x 36 GB drives = 246 GB Usable
10 x 36GB drives + 4 x 73GB drives = 461 GB Usable
RAID 1+0 Mode -
10 x 36 GB drives = 163.4 GB Usable
10 x 36GB drives + 4 x 73GB drives = 297 GB Usable
In RAID 1+0 mode the tool gave the same capacity numbers no matter what Active Hot Spare was set to.
2) It depends on your config. What array mode are you in? Do you have Active Hot Spare turned on?
Here are some scenarios for you:
Autoraid mode - Active Hot Spare=AUTO -
10 x 36 GB drives = 215.4 GB Usable
10 x 36GB drives + 4 x 73GB drives = 411 GB Usable
Autoraid mode - Active Hot Spare=0 -
10 x 36 GB drives = 246 GB Usable
10 x 36GB drives + 4 x 73GB drives = 461 GB Usable
RAID 1+0 Mode -
10 x 36 GB drives = 163.4 GB Usable
10 x 36GB drives + 4 x 73GB drives = 297 GB Usable
In RAID 1+0 mode the tool gave the same capacity numbers no matter what Active Hot Spare was set to.
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тАО06-09-2004 04:36 AM
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тАО06-09-2004 02:28 PM
тАО06-09-2004 02:28 PM
Re: VA7100 Question
I would fill the remainder with 5 drives of 73GB and have one active hot spare.
Mom 6
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