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									Prepurchase question - do I have what I need? - SoftRAID Volumes				            </title>
            <link>https://forums.softraid.com/softraid-volumes/prepurchase-question-do-i-have-what-i-need/</link>
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                        <title>Prepurchase question - do I have what I need?</title>
                        <link>https://forums.softraid.com/softraid-volumes/prepurchase-question-do-i-have-what-i-need/#post-1415</link>
                        <pubDate>Sat, 11 Jun 2016 23:46:44 +0000</pubDate>
                        <description><![CDATA[The problem is your RAID 5 volume is limited to the smallest member of the volume. So you are wasting a lot of capacity until you upgrade.

Mirrors are safest for images, in our opinion.
...]]></description>
                        <content:encoded><![CDATA[The problem is your RAID 5 volume is limited to the smallest member of the volume. So you are wasting a lot of capacity until you upgrade.

Mirrors are safest for images, in our opinion.

Each pair of disks can create a volume of the size of the smaller of the two disks. You have a lot of disks and I don't know how you intend to connect them up, but your plan ought to be to eventually make Thunderbay your enclosure for the disks.

the 1 and 1.5 TB drives should just be archives for older data or off line data. They are too small to be of value here.

The 5 2TB drives can make a 8TB RAID 5 volume.
Each pair of the larger disks can be a mirror volumes. That is probably safest. You an also have 3 disk mirror volumes, where you keep one copy off site and connect it up on a weekly/monthly/project basis, but otherwise keep it protected off site.

Make sure you maintain a backup strategy for all your images, also!]]></content:encoded>
						                            <category domain="https://forums.softraid.com/softraid-volumes/">SoftRAID Volumes</category>                        <dc:creator>SoftRAID Support</dc:creator>
                        <guid isPermaLink="true">https://forums.softraid.com/softraid-volumes/prepurchase-question-do-i-have-what-i-need/#post-1415</guid>
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				                    <item>
                        <title>Prepurchase question - do I have what I need?</title>
                        <link>https://forums.softraid.com/softraid-volumes/prepurchase-question-do-i-have-what-i-need/#post-1414</link>
                        <pubDate>Sat, 11 Jun 2016 23:03:23 +0000</pubDate>
                        <description><![CDATA[Mixing all these drive sizes is not optimal for RAID 5. Mirrors are going to be better for protecting your data than a RAID 5 in this set of hardware. As in the other post you posted, USB is...]]></description>
                        <content:encoded><![CDATA[<blockquote>
Mixing all these drive sizes is not optimal for RAID 5. Mirrors are going to be better for protecting your data than a RAID 5 in this set of hardware. As in the other post you posted, USB is not ideal for RAID.
</blockquote>


Thanks for the fast response.  I'm planning to use the eSATA connection of the drive enclosure for the drive array.

I understand that the different sizes will affect performance.  Would the amount of available storage differ between RAID 1 and 5?  

The intermediate to long term plan is to gradually upgrade all of the drives eventually to 6 TB each, but I can'r afford to do that all at once.

What would I be giving up with RAID 1 as opposed to RAID 5, if anything, sticking with RAID 1 throughout the gradual upgrade process?  How much (if any) data security am I giving up with RAID 1 as opposed to RAID 5, once I eventually get to 8 x 6 TB?

The drives I currently have available to put in the bay are as follows:
1.  6 TB WD Green, 2.  5 TB Seagate, 3.  3 TB WD Green, 4.  Hitachi 2 TB, 5.  1.5 TB WD Green, 6&amp;7, 1 TB WD Green 8. Seagate Barracuda 1 TB.

How much usable storage would this translate to in either setup?

Is there any difference in how drive upgrades would be managed by Softraid with RAID 1 as opposed to RAID 5?

Sorry for so many questions.  As I said, I'm new to this.]]></content:encoded>
						                            <category domain="https://forums.softraid.com/softraid-volumes/">SoftRAID Volumes</category>                        <dc:creator>rosewoodltd</dc:creator>
                        <guid isPermaLink="true">https://forums.softraid.com/softraid-volumes/prepurchase-question-do-i-have-what-i-need/#post-1414</guid>
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				                    <item>
                        <title>Prepurchase question - do I have what I need?</title>
                        <link>https://forums.softraid.com/softraid-volumes/prepurchase-question-do-i-have-what-i-need/#post-1413</link>
                        <pubDate>Sat, 11 Jun 2016 18:17:36 +0000</pubDate>
                        <description><![CDATA[Mixing all these drive sizes is not optimal for RAID 5. Mirrors are going to be better for protecting your data than a RAID 5 in this set of hardware. As in the other post you posted, USB is...]]></description>
                        <content:encoded><![CDATA[Mixing all these drive sizes is not optimal for RAID 5. Mirrors are going to be better for protecting your data than a RAID 5 in this set of hardware. As in the other post you posted, USB is not ideal for RAID.]]></content:encoded>
						                            <category domain="https://forums.softraid.com/softraid-volumes/">SoftRAID Volumes</category>                        <dc:creator>SoftRAID Support</dc:creator>
                        <guid isPermaLink="true">https://forums.softraid.com/softraid-volumes/prepurchase-question-do-i-have-what-i-need/#post-1413</guid>
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				                    <item>
                        <title>Prepurchase question - do I have what I need?</title>
                        <link>https://forums.softraid.com/softraid-volumes/prepurchase-question-do-i-have-what-i-need/#post-148</link>
                        <pubDate>Sat, 11 Jun 2016 17:12:24 +0000</pubDate>
                        <description><![CDATA[I will preface this post by saying that I am a noob at this sort of thing. I have been trying to learn about constructing a RAID 5 array by reading online, but I want to make sure that I am ...]]></description>
                        <content:encoded><![CDATA[I will preface this post by saying that I am a noob at this sort of thing. I have been trying to learn about constructing a RAID 5 array by reading online, but I want to make sure that I am doing everything I need to before I jump off any data storage cliffs.

My purpose in putting this array together is to provide archival storage for (what is now) over 5TB of photographic images, &gt;120K individual files.

My equipment is:

Mid 2010 6-core Mac Pro
Caldigit FATSA 6GU3 Pro eSata/USB 3.0 card
Addonics 5 eSATA Port Multiplier
Mediasonic H82-SU3S2 ProBox 8

The bulk of the storage will be in 3 WD Green HDs (6,4,3 TB) and a Seagate 5 TB drive.  

As I understand how Softraid works, I should fill all 8 bays with drives at the time I build the RAID, as upgrading the drive size is easy, but adding drives is not.  I have a number of 1 TB WD Green HDs I can use as "placeholders" for this aspect of the build.

Have I missed anything?

Many thanks!]]></content:encoded>
						                            <category domain="https://forums.softraid.com/softraid-volumes/">SoftRAID Volumes</category>                        <dc:creator>rosewoodltd</dc:creator>
                        <guid isPermaLink="true">https://forums.softraid.com/softraid-volumes/prepurchase-question-do-i-have-what-i-need/#post-148</guid>
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